Biodegradation
生物降解
🗣️ 情景例句
I see. Would you like me to reschedule you for another night?
我明白了。要不要另外为你安排别的晚上。
Go that way for two blocks,then turn left.
用那种方法为镞走2街区然后向左拐。
Don't look out of the window concentrate on your work.
别看窗外，专心工作。