Underdrain
n. 阴沟, 地下沟道, 盲沟, 暗渠
🗣️ 情景例句
Sorry, but he is out at the moment.
抱歉，他现在出去了？
I like the shape of that table.
我喜欢那张桌子的形状。
for the descriptions given by people who claimed to have seen the puma were extraordinarily similar.
因为凡是声称见到过美洲狮的人们所描述的情况竟是出奇地相似。