Definition
If something that someone says or writes is off the mark, it is incorrect or inaccurate.
（指某人说的或写的）不正确、不准确，与事实不符。
His views on the matter are completely off the mark.
他对这件事的看法完全偏离了事实。
Their predictions about the market were clearly off the mark.
他们对市场的预测显然不准确。
I think your understanding of the situation is a little off the mark.
我觉得你对情况的理解有点偏离事实。