Concaves
(concave 的复数) a. 凹的\\n[医] 凹的, 凹面的
🗣️ 情景例句
I have approximately three-year experience using a computer.
我有大约三年操作电脑的经验。
The whole thing was held up about half an hour.
整个事情耽搁了约半小时。
One wonders also why Nature, with some snakes, concocted poison of such extreme potency.
然而，在脊椎动物中，大自然神秘模测地只选择了蛇（还有一种蜥蜴），人们弄不清楚大自然为什么在某些蛇的身上调制出如此高效的毒液来。