How do the back crawl swimmers see where they are going?
仰泳的选手如何知道他们前进的方向呢？
Normally, the neural crest cells crawl through the embryo and form a strip running along the back.
通常情况下，神经嵴细胞会爬过整个胚胎并形成一条横贯背部的窄带。
I feel like everything slows to a crawl. And when I shift back up to a higher level perspective, it's like I'm back in the flow again.
我感觉到一切慢得像爬行，然后我又转回高层次视角，就像我回到了那股流中一样了。
The webmasters tool allows you to check crawl issues, back links, outbound links and also sitemap.
网站管理工具允许你检查抓取的内容，反向链接，出站链接，也可以是站点地图。
America's GDP growth slowed to a crawl over the summer as builders cut back.
随着建筑商数量的减少，夏天里美国的GDP增长也慢的像蜗牛爬。
So now I have to crawl my way back.
所以我现在只能一步步往上爬了。
You get the idea.My morning ritual isn't very exciting, however, by following this plan my brain and body know what to expect and I'm less likely to crawl back into bed.
你已经知道了吧，我早间的例行公事能并不是能激动人性的，然而，顺着这些计划，我的脑袋和身体都知道接下来要做什么，而我也不会想着睡“回笼觉”去。
The road is giving out all over! I think I can crawl back up.
路面整个都松动了，我想我能慢慢爬上去。
我想我能爬上来。
Listening to her generous laugh, I felt a switch flick deep inside me and began to crawl back into the land of the living.
听着她爽朗的笑声，我觉得内心颤抖了一下，又重新回到现实中来。
I felt something crawl on my back just now.
我刚才觉得有什么东西在我背上爬。
If one of them tries to crawl up the side, the rest will pull it back down. "Johanna tuckman."
就算有一个想往上爬，其它的也会把它拽下来。
Grace: I am. All I want to do is crawl back in bed.
葛瑞丝：是啊！我现在只想爬回床上。
At midnight, the Chengs saw that big turtle the maid had let go crawl back into the room and smear mud all over the maid.
午夜的时候，程家人看到被丫环放走的那只大乌龟爬到房间里，把泥涂到丫环身上。
Then, I count to a hundred, crawl back.
然后，我数到一百，再爬出来。
I will be back to crawl you again sometime this century.
我将在本世纪的某个时间再次访问你的网站。
Only a few young men were able to crawl out of the back of the burning bus and escape, one survivor told a local TV station.
只有少数几名年轻人能爬出燃烧的公共汽车后部逃脱，一名幸存者告诉一家当地的电视台。
After two hours, he let her crawl back in bed.
两个小时以后，他才让她爬上炕来。
And that is my guide to back-crawl, have fun.
这就是我关于仰泳的指导，祝你们开心。
Music was my refuge. I could crawl into the space between the notes and curl my back to loneliness.
音乐是我的避难所。我只要钻入音符间的空隙，卷曲身体背对寂寞。
We all have those days when all we want is to crawl back in bed for a few more hours.
我们都有过什么也不想，只想好好地在床上多呆几个小时的日子。
Captain Englehorn: That's the thing about cockroaches. No matter how many times you flushed them down the toilet, they always crawl back up the bowl.
英格兰霍船长：就好像蟑螂，不管你多少次将它们冲下马桶，它们仍然可以爬回到座便上。
Owen flew back to England with his wife Louise Bonsall - who broke down in tears after seeing him crawl off the pitch in agony.
欧文与他的妻子路易丝本索一起乘飞机回到英格兰，她看到他受伤痛苦时忍不住哭泣。
Do I hang back and crawl through the remaining 52 turns at their speed?
我是否该退几步，跟着它们，以爬行般的速度缓缓驶过剩下的52个大弯？
Even worse, when they decided to give that up and were ready to return, they found they had forgotten how they had walked before. As a result, they had to crawl back home.
更糟的是，当他们决定不学了，准备回家的时候，却发现把自己原来走路的方式都忘了，只好爬着回去。
Even worse, when they decided to give that up and were ready to return, they found they had forgotten how they had walked before. As a result, they had to crawl back home.
更糟的是，当他们决定不学了，准备回家的时候，却发现把自己原来走路的方式都忘了，只好爬着回去。
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