心知肚明
xīn zhī dù míng
Meaning
- to be well aware
Example sentences
那位老师批改国文测验向来严苛，学生全都心知肚明。
那位老師批改國文測驗向來嚴苛，學生全都心知肚明。
nà wèi lǎo shī pī gǎi guó wén cè yàn xiàng lái yán kē， xué shēng quán dōu xīn zhī dù míng。
That teacher was always strict in grading Chinese tests, and all the students knew it.