Gravity line
[化] 自流管
🧩 词语组成解析
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 was a pleasant surprise.
那是个惊喜。
The husband has built a doghouse for his dog.
丈夫为爱犬建造了狗屋。
Yes, sir.
好的，先生。