can not feel one's legs 感觉不到腿了，麻木，没有知觉

　　I've been sitting for 3 hours and I can't feel my legs now.

　　我在已经坐了3个小时了，现在腿都麻了。

　　It's so cold here. I can not feel my hands.

　　这里太冷了，我的手已经失去知觉。

　　疯狂练习吧！