after i walked in the snow for eight hours ,my leg___under me A.gave out B.gave away

问题描述:

after i walked in the snow for eight hours ,my leg___under me A.gave out B.gave away
应该选哪个呢?我知道give out有用完,用尽的意思但是为什么后面还跟了个under me不理解啊

这里的under me是指从属的意思,我的脚(从属于我)筋疲力尽.加上under me就为了强调一下.没什么特别意思.