打底裤的英文：
leggings

leggings是什么意思：
打底裤，绑腿

meggings (male/man + leggings) 男式紧身裤

Not a leg to stand on
站不住脚

They outfitted him with artificial legs.
他们为他安了假腿。

coordinate the movements of the arms and legs
使胳膊和腿的动作协调

Lies have short legs
谎言是站不住脚的

Give someone a leg up
助一臂之力