below the belt含义不是指“在腰带之下”，其正确的含义是暗箭伤人的；不公正的。

【例句】
I know she really wants the promotion, but telling the boss about my personal problems was below the belt.
我知道她非常想升职，但是告诉老板我的个人问题绝对是暗箭伤人。

That was distinctly below the belt!
那显然是不公正的！