不回

not return; not go back

→ 不
phrase Uncommon #9,833
not return; not go back Negates 回 in the sense of returning to a previous place.
CH: 你不回实验室了吗?
EN: Aren’t you going back to the lab?

如果不回实验室接受治疗你就有生命危险

If you don't return to the laboratory for treatment, your life will be in danger.

— 阿基拉 (1988)

我妈妈当她状态不好的时候像一个嬉皮士离开村庄直到有一天她一去不回

When my mother wasn’t doing well, she was like a hippie, leaving the village—until one day, she left and never came back.

— 回归 (2006)

你不回实验室了吗?

Aren’t you going back to the lab?

— 蝙蝠 (2009)

我永远不回塔巴德

I’m never going back to Tabad.

— 塔巴德 (2018)

我不回地球。

I'm not going back to Earth.

— 飞向太空 (1972)

不回了

I'm not replying anymore.

— Dying to Survive (2018)

以前还有回来的电车最近都只去不回

The trams that used to come back now only go one way.

— 千与千寻 (2001)

发誓你永远不回塔巴德

Swear you'll never go back to Tabard.

— 塔巴德 (2018)

你们干吗不回船上去,把船驶出我的港口?

Why don’t you get back on your ship and sail it out of my harbor?