他突然笑了笑，使得她两膝发软。
她双脚大步稳稳分开，双膝微微弯曲。
他们在齐膝深的泥地里费了很长时间。
我双膝跪下，祈求得到指引。
她拎起她连衣裙的下摆刷了她的两膝。
她绊了一跤摔倒了，擦伤了双掌和双膝。
有些地方的雪已齐膝深了。
她双臂抱膝坐在椅子上。
我在齐膝深的水中跋涉。
他单膝跪下向她求婚。
麦卡纳利双膝发软弯了下去，瘫倒在地板上。
Mcanally's knees buckled and he crumpled down onto the floor.
他往后退步时，她双膝跪倒在地，接着脸也着地。
As he stepped backwards she fell onto her knees, then onto her face.
水只有齐膝深。
草有齐膝高。
平躺曲膝。
他弄伤了他的双手和双膝。
他把孙子夹在双膝当中。
当他们意识到这是一个温泉时，水已齐膝深了。
They were almost knee-deep when they realized it was a hot spring。
她抱了抱我的双膝。
背要直，只弯两膝。
可怜的帽商丢掉了茶杯和黄油面包，单膝跪下。
The miserable Hatter dropped his teacup and bread-and-butter, and went down on one knee.
他吓得两膝发抖。
他们意识到这是一个温泉的时候，水已经齐膝深了。
They were almost knee-deep when they realized it was a hot spring.
我双膝跪地。
他低垂着头，犹犹豫豫地走上前，单膝跪在汤姆面前。
He advanced hesitatingly, with head bowed and bare, and dropped upon one knee in front of Tom.
缓慢曲膝。
雪深没膝。
双脚分开与肩同宽，双臂抱着婴儿。保持背部挺直，重复深膝弯曲。
Standing with feet shoulder-width apart and cradle baby with both arms. Keeping a straight back and repeat deep knee bends.
“是的，”他接着说，双膝跪下来查看，“你的小腿确实划破了。”
"Yes," he went on, going down on his knees to look, "you've cut your shin, sure enough."
他从书架上拿下一本书，单膝跪下，打开了它。
He pulled a book from the shelf, dropped to one knee, and opened it.
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