"run your head against a brick wall" in Chinese (Simplified)
Definition
一再尝试做一件不可能或极其困难的事情，通常结果只是受挫或毫无进展。
Usage Notes (Chinese (Simplified))
非正式的习惯用语，表示努力白费。常用作‘感觉在徒劳无功’。只用于明显做不到的事情，不适合小问题。
Examples
I feel like I run my head against a brick wall when I talk to him.
和他讲话的时候，我觉得自己像是在**碰壁**。
Trying to fix this old car is like running my head against a brick wall.
修这辆旧车就像在**徒劳无功**。
If you run your head against a brick wall, maybe it’s time to try a new way.
如果你一直在**碰壁**，也许是时候换一种方法了。
Every time I argue with my brother, it’s like running my head against a brick wall—he never changes his mind.
每次和我弟弟争论，我都觉得在**碰壁**——他从不改主意。
I've sent ten emails but got no reply—I'm just running my head against a brick wall at this point.
我发了十封邮件却没人回复——现在简直是在**碰壁**。
Trying to get this system to work is just running your head against a brick wall—it’s broken beyond repair.
想让这个系统运行就是**徒劳无功**——已经坏得不能修了。