Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

在口语中，还有把袜子放到嘴里的表达，mouth也是用it替代了，常说put/stick a sock in it，但是并不是“把袜子放到嘴里”的意思，而是多用于表达“闭嘴”一意~ Given the situation here, I have to not put a foot wrong. I am the eyesore for them. I can't put a foot wrong.