Bioturbation
生物扰动作用
🗣️ 情景例句
They took every last dime.
他们拿走了所有的钱。
I must play my spare time well, or I end up doing nothing.
我必须善于利用空闲的时间，否则生命将会在无所事事中告终。
It's nearly ready.We can have dinner at seven o'clock.
马上就好。7点钟我们可以吃饭。