乘务员要求所有人将座椅恢复到直立位置。

The flight attendant asked everyone to return their seats to the ___upright position.

当我们准备降落时，我们被指示将座椅调至直立位置。

As we prepared for landing, we were instructed to put our seats in the ___upright position.

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.