Don't open the door while the train is in motion.

列车运行时，请勿打开车门。

《新英汉大辞典》

Could you hold that door open while I bring in the boxes from the car?

我把盒子从车里搬进来的时候，你可以帮我开着门吗？

youdao

Could you hold that door open while I bring in the boxes from the car?

我把盒子从车里搬进来的时候，你可以帮我开着门吗？

youdao