一次

Gradually he would start attending them fortnightly and then monthly.

后来他每两周去开一次会，逐渐就变成了每一个月去一次。

If the cue stick contacts the cue ball more than once on a shot, the shot is a foul.

如果在一次击球中球杆接触母球多于一次，则为犯规。

All I need is to feed him water and food once every 24 hours. And also, I can play Frisbee with him.

我只要每隔24小时喂它一次水，并且喂它一次食物就可以了。

After working with bees for many years,Professor Von Frisch was puzzled by something he had noticed again and again.

研究蜜蜂一些年后，卡尔·冯·弗里斯教授一次又一次的对他所注意的一些事而疑惑。

This is a full moon, so a short trip may be coming to fruition.

这是一次满月，所以一次小的旅行也许将会取得成果。

I did a teaching experiment on solving the maximum and minimum value of quadratic function in one variable with two different teaching ways: asking questions and dialogue. These two periods are studied and analyzed here.

本人用提问与对话两种不同的教学方式对一元二次函数在闭区间上的最值这一数学内容进行了一次观察与分析的教学尝试，并对这两节课进行了个案研究与分析。

But time and time again,Gable's team saw that passive responses negatively affected relationship satisfaction.

但是，Gable小组成员们一次又一次地看到各种被动反应会给关系满意程度带来消极影响。

In an interview with BBC Radio Scotland UEFA's communications and public affairs director William Gaillard spoke about the updates to the San Siro: 'Although we have not received any official news from the Italian FA, I would imagine that what happened yesterday was a good rehearsal and the stadium would be at its normal capacity for the game between AC Milan and Celtic.

在一次对苏格兰BBC Radio 关于欧冠的访谈中，公共事务司长 William Gaillard 对圣西罗的翻新做出了评论：尽管我们并没有收到意大利足协的官方新闻，但我相信昨天进行的比赛是一次很好的预演，这座球场将以正常的容量承接AC米兰和凯尔尔特人之战。

This time, we finally found a big customer, they generously gave us an opportunity to communicate.

这一次，我们终于找到了一个大客户，他们慷慨地给了我们一次交流的机会。

The main advantages of EGGLE include:the fixed neighborhood parameter k,only one time for constructing neighborhood graph and geodesic distance matrix,only needing to choose generalized Gaussian functions many times for constructing many Laplacian matrixes,obtaining multiple independent low-dimensional coordinate sets, independently training multiple classifiers,and combining classification results of these component classifiers to produce the final identification.

3提出了一种基于GGLE的集成判别算法，该算法的主要优点是：近邻参数k固定，邻接矩阵和测地线距离矩阵都只构造一次，只需要多次选择广义高斯型函数构造多个拉普拉斯矩阵，获取多个独立的低维空间坐标集合，独立学习分类器，集成分类识别。

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。