Ectohumus
[地质]外腐殖质
🗣️ 情景例句
I don't like to waste my time chatting on the net.
我不想把时间浪费在网络聊天上。
A great ship asks deep water.
巨轮寻深水而航行。
I will seek from my doctor's advice.
我将请教医生的意见。