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 just a little present for Max.
这仅仅是给Max的一件小礼物。
Love asks faith,and faith firmness.
爱情要求信任，信任要求坚定。
There being no one to help me, I had to do it all alone.
因为没有人帮助我，我不得不独立完成这项工 作。