一次也没有

Professor Dai's acknowledgment of Siyu's decision to purchase a secondhand car so that the older woman could avoid taking a crowded bus or enduring a chatty cabdriver was hinted at but not directly stated, and so was her gratitude for Siyu's alertness, when she had failed to answer Siyu's weekly phone call and Siyu had discovered the older woman on the floor by the piano, having suffered a stroke.

连她对思玉警觉心的感激也是这样婉转表示出来的，有一次思玉发现她没有接每周一次的例行电话就赶过来了，发现老太太心脏病发作倒在钢琴旁边的地板上。

There would be several conjunctions between the two planets, but none in Cancer as viewed from the Earth.

这期间它们两个天体之间也出现过几次重合，但是没有一次是从地球这个角度看上去处于巨蟹座的时候。

I remembered, from Fe Gang to Ying De, I needed to ride through several tunnels by bike, one of them was 450 meters in length, it was narrow and there was no any lighting in it, only the little bite sunshine from out of tunnel, I was afraid of vehicles, their noises were earsplitting, I was worried about I was bumped, I was worried about if there were some holes in dark tunnel, I was afraid of dropping down into them. I was full of dread and helplessness I never had, in front of me, only a little bit faint sunshine.

我还记得从佛冈到英德，我要穿过几个隧道，有一个450米长的，我走进去非常害怕，周围黑得什么也看不见，我第一次感受大什么叫伸手不见五指，里面又窄又没有灯，只有洞口那一点点光明，我很怕有车进来，那声音震耳欲聋，我担心它撞到我，我有怕里面有个洞我掉下去，心里被一种从来没有的恐惧和无助笼罩着，我眼前只有一点光明。

The equation of one dimensional mathematical model i human lung is built. The study is transformed from three-dimensional space one dimensional problem. This paper is base on the test of single breath washout. According the law of Pick and convction-difussion, we have t equation of one dimensional mathematical model.

论文以一次深呼吸氮清洗实验为研究基础，根据Fick定律和扩散对流定律得出一维一层喇叭口模型内气体传输和扩散方程，计算得出的模拟结果肺泡高坡区为一条水平直线，也没有明显的第Ⅳ区域。

First as a self-effacing student at a Southern Negro College, next as a naive laborer in a Northern paint factory, then as a radical agitator on the streets of Harlem, finally as a man forced to flee the insane nether world of the ghetto in the midst of a race riot by literally going into the bowels of the city, the protagonist of Invisible Man is frustrated on his existential voyage by the absurdities of racism, hypocrisy, and physical and spiritual poverty.

最初主人公是一个几乎没有自我意识的南方黑人大学的学生；接着在北方的一家油漆厂里成了一名性格天真的工人；再后来，他成了哈莱姆区的一位街头煽动者；最后，在一次种族暴动中他被迫逃离那个疯狂的世界，一个人躲进了城市的中心。《看不见的人》中的主人公感觉到了种族主义和伪善的荒诞，也感觉到了精神和物质上的贫困，因此他对自己的生存状态很是沮丧。

He could retire, as he's more than once threatened to do (the first time, reportedly, when he was 20), could install himself in a dacha somewhere with "a kid in one hand and a Tsingtao in the other"(as he once described his ideal future during a press conference in China), could leave behind forever the game that has been his love and tormentor since childhood, the game that may have saved him - as he mused at this year's French Open - from a life spent "picking up bottles in a park in Moscow," and no one would have grounds on which to fault him.

他可以退役，他曾经被威胁这样做过（第一次，据报道是20岁的时候），可以去个什么地方，"一手抱孩子一手拿青岛啤酒"（这是他有一次在中国接受访问的时候描绘的），可以永远离开从童年就成为他的爱好和痛苦的比赛，比赛也可以拯救他—就像他今年法网时说的—从在莫斯科捡破烂的生活中。没有人会基于任何来指责他。

Once, the boy wanted say love to other girl,then he went out with some friend for meet the girl, also this girl too.when they crossed the road one car was coming so fast, girl didnt think about anything and then cover the boy, stand in front of the boy, after that the girl already at one's last gasp, the boy looked at that andwas crazy,during go to hospital girl hold his hand,because she knew she doesnt have much time be with the boy, the boy was so sad to say to the girl,"why you so foolish?"

有一次，男孩为了能向另一个女孩表白，就借著和朋友一起出来的幌子。同时，也邀请了女孩，当男孩过马路的时候，突然一辆失控的轿车迎面而来，女孩想也不想，挡在了男孩的前面，女孩因躲闪不及，生命垂危。男孩顿时傻了眼了，在去医院的路上，女孩一直握著男孩的手不放，因为女孩清晰地知道自己快死了，和男孩相处的时间没有多少了。男孩伤心地对女孩说：&你怎么这么傻啊？&

Not only did his skin go from rough and patchy to smooth in less than a week of using this product post-bath, but I've also used it on his chaffed, rosy winter cheeks and when his bottom was red and irritated once from having diarrhea. I also use it to massage into my knuckles.

我儿子每****后使用该产品，一个星期不到他的皮肤就开始变光滑，没有了之前的粗糙和一块块的；我儿子冬天的小脸蛋有些皴裂发红，我涂在脸上也有效；又一次我儿子拉肚子，结果拉的便便的地方都发红受刺激了，我把这个万用乳霜涂在指节处给我儿子按摩也很有效。

An interesting detail is that for once, we are allowed to witness the process of magical cooking, which might be easier as the Sauce Béchamel comes directly out of her wand, but even if you are a witch, things may burn if you lack attention, and the cauliflower shrivels if your husband doesn't arrive for dinner in time.

有趣的是，我们有一次亲眼见证了用魔法烹饪的过程：从魔杖中直接流出的确更简单易行，但即使你是个巫师，如果不看好做着的饭菜，也会烧过头的；而如果你的丈夫没有及时回家吃饭，做好的花椰菜也会因为超时而皱成一团。

Dwarf Female -"I give myself a Dutch oven pedicure every night. I've got no foot fungus at all. My toes are pristine."

我每晚都要修一次脚，所以我根本没有脚气，脚趾头一点点毛病也没有。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。