Underdrainage
n. 暗渠排水, 地下排水
🗣️ 情景例句
Some wild animals just cannot be tamed.
一些野生动物无法驯服。
What is your hurry?
什么事让您这么着急呢？
Have you seen our new packing specifications?
你看过我们新的包装指示了没有？