Biochar
生物炭
??? 情景例句
I have an idea that may solve the problem for him
我有個主意他也許能解決這個問題
I know the boy whose father is a dentist.
我知道那個男孩的父親是牙醫。
What's the matter, Granny? Can I help you?
什么事，老大娘？我能幫你嗎？