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When the pitcher throws to the batter, it is a strike if he swings and misses, if he hits the pitch into foul territory, or if he doesn't swing at a pitch in the strike zone.

当投手把球投向击球员后，如果击球员挥捧而未击中，把球打入界外地区或球在好球区之内而来挥棒击球，都算是一击。

In this paper , the statistic significance and clinical application of forest plots in a meta-analysis have been fully discussed. If the horizontal line represents the 95% confidence interval of the indexes including odds ratio, relative risk, weighted mean difference, and standard mean difference crosses the vertical line, the effect of test group is not signficant with that of control group; if the horizontal line lies to the right of the vertical line, it indicates that the test group is significantly effctive. If the horizontal line lies to the left of the vertical line, it indicates that the control group is more effective.

对Meta-分析的森林图的统计学意义和临床应用做了较为详细的解释：当统计指标比值比、相对危险度、加权均数差和标准化均数差的95%可信区间横线与森林图的无效线(横坐标刻度为1或0)相交时，试验组的效应量等于对照组，试验因素无效；当其95%可信区间横线不与森林图的无效线相交且落在无效线右侧时，试验组的效应量大于对照组；当其95%可信区间横线不与森林图的无效线相交且落在无效线左侧时，试验组的效应量小于对照组。

On the morning of February 2, Groundhog Day in Punxsutawney, Phil is invited to step out of his lair. If he sees his shadow, in other words if the sky is clear and bright, local people believe -- or at least they profess to believe -- that there will be another six weeks of hard winter. If Phil casts no shadow because the sky is overcast, the prognosis is for mild weather and an early spring.

在2月2日，也就是彭瑟托尼镇的土拨鼠节的上午，人们请菲尔走出它的窝，如果它能看到自己的影子，也就是说天空晴朗无云，当地人就会相信（或者说至少他们表示相信）未来还有6周的寒冬；如果是阴天，菲尔没有投下影子，就预示着天气温煦，春天早到。

Is family so poor that makes you to sell your blood? If yes, you are still an university student. Do you have to dignify yourself by treating your guests for dinner and karaoke in deluxe hotel? If yes, you can make money from searching a part time job. Do you have to sell your blood? If yes, do you have to pass it on to anybody else?

家里就穷得要你去卖血了；就算真的是穷，你现在还只是个大学生，非得去请客去K歌，这么爱面子啊；就算你年轻气盛爱面子，你可以找兼职挣钱，非得去卖血吗；就算非得卖血才有钱，你有必要让别人知道吗？。。。

If you print out the样稿black block, black, and the toner will stick Photo taken elsewhere, this means that the surface of hot roll has been or injury, if minor, can be used after cleaning (but not for the lost paper sulfate ), if seriously, only the replacement of the heating roller.

如果打印出来的样稿出现黑块、黑条，以及将图文的墨粉粘带往别处，这表示热辊表面已被或伤，若较轻微，清洁后可使用，若严重，则只有更换加热辊了。

If, in the absence of these movements, the landlords, rich peasants, counterrevolutionaries, bad elements and monsters were all allowed to crawl out, while our cadres were to shut their eyes to all this and in many cases fail even to differentiate between the enemy and ourselves but were to collaborate with the enemy and were corrupted, divided and demoralized by him, if our cadres were thus pulled out or the enemy were able to sneak in, and if many of our workers, peasants, and intellectuals were left defenseless against both the soft and the hard tactics of the enemy, then it would not take long, perhaps only several years or a decade, or several decades at most, before a counterrevolutionary restoration on a national scale inevitably occurred, the Marxist-Leninist party would undoubtedly become a revisionist party or a fascist party, and the whole of China would change its color.

不然的话，让地、富、反、坏、牛鬼蛇神一齐跑了出来，而我们的干部则不闻不问，有许多人甚至敌我不分，互相勾结，被敌人腐蚀侵袭，分化瓦解，拉出去，打进来，许多工人、农民和知识分子也被敌人软硬兼施，照此办理，那就不要很多时间，少则几年、十几年，多则几十年，就不可避免地要出现全国性的反革命复辟，马列主义的党就一定会变成修正主义的党，变成法西斯党，整个中国就要改变颜色了。

If, in the absence of these movements, the landlords, rich peasants, counterrevolutionaries, bad elements and monsters were all allowed to crawl out, while our cadres were to shut their eyes to all this and in many cases fail even to differentiate between the enemy and ourselves but were to collaborate with the enemy and were corrupted, divided and demoralized by him, if our cadres were thus pulled out or the enemy were able to sneak in, and if many of our workers, peasants, and intellectuals were left defenseless against both the soft and the hard tactics of the enemy, then it would not take long, perhaps only several years or a decade, or several decades at most, before a counterrevolutionary restoration on a national scale inevitably occurred, the Marxist-Leninist party would undoubtedly become a revisionist party or a fascist party, and the whole of China would change its color.

阶级斗争、生产斗争和科学实验，是建设社会主义强大国家的三项伟大革命运动，是使共产党人免除官僚主义、避免修正主义和教条主义，永远立于不败之地的确实保证，是使无产阶级能够和广大劳动群众联合起来，实行民主专政的可靠保证。

If you do want to go for an easy ride in the park you don't need to spend too much, if you think you will do any off-road riding then big tread tires maybe all you need, but if you think you might try some rough stuff then you will need suspension.

如果你想要去的轻松骑在公园里你不需要花太多，如果你认为你会做任何越野骑马然后大轮胎胎面也许您所需要的，但如果你认为你可以试试一些粗糙的东西，那么你将需要暂停。

If you do want to go for an easy ride in the park you don't need to spend too much, if you think you will do any off-road riding then big tread tires maybe all you need, but if you think you might try some rough stuff then you will need suspension.

如果你想去一个坎坷在公园不需要花太多，如果你认为你会做任何的越野骑马后大轮胎胎面也许你需要，但是如果你认为你可以尝试一些粗糙的东西，那麼你将需要暂停。

Wouldn't it be nice if computers could fix themselves What if you never had to worry about installing or updating software What if your computer could continually finetune it's operation to maintain peak performance For many people ,this all sounds too good to be true; such maintenance tasks can be time-consuming and confusing.

如果计算机能够自己组织，难道这不是一件好事吗那我们如果不用担心如何去安装和升级软件那将会是怎样呢如果你的电脑能连续的自动调整以保持最好状态那会是怎样呢对于很多人来说，这听起来挺好但未能实现；如此的维护任务将是费时和繁琐的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。