Biodegradation
生物降解
🗣️ 情景例句
I have lots of hobbies. I love to stay busy.
我有很多爱好，我喜欢让自己忙着。
How much is this rug?
这条地毯多少钱？
Even under a clear blue sky, the village looked forbidding, as all the houses were built of grey mud bricks.
农舍全用灰色的土坯建成，因此，即使在晴朗的蓝天底下，村庄看上去也会令人感到难以亲近。