An apt remark, description or choice is especially suitable.
The words of this report are as apt today as in 1929.
这份报告的措词在当今如在1929年一样恰当。
If someone is apt to do something, they often do it and so it is likely that they will do it again.
She was apt to raise her voice and wave her hands about.
她常常提高嗓门并挥舞双手。
An apt student is intelligent and able to understand things easily.
She had taught him French and he had been an apt student.
她教过他法语,他一直是个聪慧的学生。