His jet needed no propellers. It was a tube, open at both ends.

他的喷气流不需要螺旋桨，而是由一个两端开口的管子来实现。

youdao

I woke up 4 am because of jet lag and shops were open.

我因为时差原因在凌晨4 点钟醒了，发现商铺居然还开着门。

youdao

I woke up 4 am because of jet lag and shops were open.

我因为时差原因在凌晨4 点钟醒了，发现商铺居然还开着门。

youdao