upright

尽管风很大，他仍然站得笔直。

He stood ___upright despite the strong wind.

花瓶倒下后，我小心地把它竖直放在桌子上。

After the vase fell over, I carefully placed it ___upright on the table.

飞行员指示我们系好安全带并将座位调直。

The pilot instructed us to fasten our seatbelts and put the seats ___upright.