Biodegraded
vt. 生物递降分解（biodegrade的过去式与过去分词形式）
🗣️ 情景例句
This spring is the origin of the brook.
这泉水是那条小河的源头。
I couldn't agree more.
我完全同意。
Fine, thanks, Dad. What about you?
很好，谢谢爸爸。你呢？