Concave line label
[計] 凹線標號
?? 詞語組成解析
concave
['k?n'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
line
[la?n]
n. 線條;排;行列;界線;
vt. 排隊;用線標出;沿…排列成行;給…安襯里;
vi. 形成一層;排隊;擊出平直球;
label
['lebl]
n. 標簽;稱標記，符號;[建] 門或窗戶上面的線腳;
vt. 貼標簽于;把…稱為;把…列為;[化]用放射性元素使（元素或原子等）示蹤;
??? 情景例句
When did you last go fishing with Robbie?
你上一次和Robbie一起去釣魚是什么時候啦
I'd appreciate it if you would turn out the lights.I'm sleepy.
如果你關燈我將感激你的.我困了。
Yes, and full payment is due within 30 days.
是的，如果在30天骨付款就沒有折扣。