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
He made a pretty fortune by selling all his land.
他卖了所有的土地发了大财。
How long?
多长？
That's OK. Jim, you must look after yourself and keep healthy.
行。吉姆，你要照顾好自己，保持身体健康。