flatten out
US /ˈflæt.ən aʊt/
UK /ˈflæt.ən aʊt/

片語動詞
1.
變平, 弄平
to become flat or level, or to make something flat or level
範例:
•
The road started to flatten out after the steep climb.
陡峭的爬坡後,道路開始變平。
•
You need to flatten out the dough before baking.
烘烤前你需要把麵團擀平。
在 Lingoland 學習這個單詞