Concave shape
[医]凹形
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
shape
[ʃep]
n. 形状;模型;状态;身材;
vt. 塑造;使符合;体现;
vi. 使成形;形成;
🗣️ 情景例句
Don't forget Susan.
别忘了Susan。
I couldn't keep the appointment because I was sick.
我不能赴约因为我病了。
Sometimes ago, the United States Navy, for instance,
例如，美国海军前些时候