Keep your leg straight. Keep your leg straight for me.

腿伸直 给我把腿伸直。

Keep your legs still under the table.

双腿放在桌子下面不要乱动。

Lie on your back on a flat surface, keeping your legs straight.

仰面平躺，双腿伸直。

Captain Groberg survived, but he needed 33 surgeries to keep his leg.

佛洛伯格上尉幸存下来, 但是他需要33次手术才能保住他的腿。

And then keep the right leg extended as you bring the left leg up.

然后左腿抬起的时候 右腿保持伸展状态。

And they do it using smooth-rimmed hips, with only friction to keep their legs in sync.

而且它们用光滑的臀部提供动力，只需要摩擦力保持它们的腿同步运行。

So you better convince her to keep her legs crossed until she's out of this house. wait.

所以你最好劝她不要越界，直到她离开这座房子之前。

… a tiny rose-patterned case for her pillow, eight colorful socks to keep her legs warm. But mostly, she slept.

...她的枕头上有一个小小的玫瑰图案的外壳，八条色彩缤纷的袜子让她的腿保持温暖。但大多数时候，她都睡了。

Try to keep your legs straight.

【straight】尽量把你的腿伸直。

The nerve package in the spinal cord keeps Sauroposeidon's legs and tail moving, so its tiny brain can concentrate on finding food.

脊髓上的神经组可以协调波塞东龙腿部和尾部的活动，好让它微小的大脑集中精力寻找食物。

Here is how it is done: 1 Roll the person onto one side.Keep the legs straight.

方法如下： 1 将人翻到一侧。保持双腿伸直。

All sorts of traps as Compeyson could set with his head, and keep his own legs out of and get the profits from and let another man in for, was Compeyson's business.

康佩森可以用他的脑袋设下各种陷阱，让自己的腿远离，并从中获利，让另一个人上当，这是康佩森的事。

But try as it " maple" it could only " pine" away for the kind of record Alyssa set as she " plied" her trade, " spinning" from beach to beach while keep her " sea legs" " all aboard" .

但毫无疑问，踩在各种木头（maple, pine）上穿过河流，这是Alyssa的专长。