Concave line
[计] 凹线
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
line
[laɪn]
n. 线条;排;行列;界线;
vt. 排队;用线标出;沿…排列成行;给…安衬里;
vi. 形成一层;排队;击出平直球;
🗣️ 情景例句
It's quite different from what I expected.
这与我预想的很不相同。
He can't really mean to work against us, can he?
他不可能故意妨碍我们的，对吗？
Everything that happened was my fault.
所有的事都是我的错。