Underdrainage
n. 暗渠排水, 地下排水
🗣️ 情景例句
This job is hard work.
这活儿太累人了。
Will you please call me back?
请你回我一个电话好吗？
They lived by hunting and by gathering roots, nuts and wild fruits.
他们靠狩猎和采集根茎、坚果和野果为生。