何因
_
什麽缘故，为什麽。
héyīn
wr. why; for what reason什麽缘故，为什麽。
в русских словах:
примеры:
原因何在？
What is the reason for it?
原因何在?
What is the reason for it?
究系何因,
尚待深查。 The actual cause awaits further investigation.
深究原因何在
get to the bottom of it