"不至于" (bú zhìyú) is a Chinese expression that can be translated as "it is not necessary" or "it is not necessary to go that far." It is often used to indicate that something is not as extreme or severe as someone else is suggesting.

For example, if someone says "我们不得不离开这里" (wǒmen búdébù líkāi zhèlǐ) meaning "we have to leave here," someone else might respond with "不至于吗" (bú zhìyú ma) meaning "is it really necessary?" or "do we really have to go that far?"

Here are some examples of "不至于" (bú zhìyú) being used in Engpsh sentences:

"I know the traffic was bad, but do we really have to leave an hour early? It's not necessary to go that far."
"I understand that you're upset, but is it really necessary to break up over this? It's not necessary to go that far."
"I know the project is important, but do we really have to work overtime every day for the next week? It's not necessary to go that far."