徒然拼命地干;徒劳无功
do sth till you are blue in the face
徒然拼命地干;徒劳无功
to try to do sth as hard and as long as you possibly can but without success
You can argue till you're blue in the face, but you won't change my mind.你可以费尽口舌,但改变不了我的主意。
释义来自《牛津高阶英汉双解词典》第 9 版