straighten
🇺🇸
/ˈstreɪtn/
🇬🇧
/ˈstreɪtn/
to make something not bent or curved
Please straighten the picture on the wall so it looks level.
請把牆上的畫弄直,讓它看起來水平。
to stand or sit with your back straight
Straighten your back when you sit at the desk.
坐在桌子前時挺直你的背。