Concavities
n. 凹面, 成凹形( concavity的名词复数 )
🗣️ 情景例句
I'd like to talk to you about something.
我想跟你谈一件事。
We're afraid that your product's quality won't satisfy Chinese customers.
恐怕你们的产品质量无法使中国顾客满意。
On the farm, everything begins to grow.The trees turn green, and the flowers start to come out.
农场里，各种作物开始生长。树木变绿，鲜花盛开。