Biodegraded
vt. 生物递降分解（biodegrade的过去式与过去分词形式）
🗣️ 情景例句
I just saw a big one!
我刚看见一条大的。
Don't forget to write to me.
不要忘记写信给我。
It took a very long time to carve a page for a book.
刻一页书要花费的时间太长。