Definition
If something that someone says or writes is off the mark, it is incorrect or inaccurate.
（指某人說的或寫的）不正確、不準確，與事實不符。
His views on the matter are completely off the mark.
他對這件事的看法完全偏離了事實。
Their predictions about the market were clearly off the mark.
他們對市場的預測顯然不準確。
I think your understanding of the situation is a little off the mark.
我覺得你對情況的理解有點偏離事實。