Downcomer
n. 下水管, 下导管
✅ 同义词
🔁 扩展释义
【化】 下降管; 降液管; 降水管
🗣️ 情景例句
Yes, we are, Mr. Wang. How are you going to pay?
对，我们开门。你打算如何付钱？
Button holes are very hard to sew.
要缝钮扣洞非常难。
The sides of the deer were coloured with a reddish-brown paint.
鹿的四周用一种淡棕带红的颜色勾勒。