Biodegraded
vt. 生物递降分解（biodegrade的过去式与过去分词形式）
🗣️ 情景例句
We'll tell you the big surprise.
我来告诉你们这个大惊喜。
If the ox falls,whet your knife.
牛一倒，快磨刀；人遭难，众人踩。
Last Wednesday, I went for a walk in the woods.
上星期三我到树林里去散步。