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If someone is under your feet, they are near you in a way that is difficult and prevents you from doing what you want to do.
如果某人under your feet，那么就是说他们以一种麻烦的方式在你附近或者阻碍、妨碍你进行你想做的事;碍手碍脚
The children were under my feet all day so I couldn't get anything done.
孩子们一整天在我这里碍手碍脚的，我什么都做不了。