Aplacophora
n. 无板纲
🗣️ 情景例句
I'm so tired, I have to take a nap when I get home.
我太累了，回到家后一定要睡上一会儿。
Don't cry out before you are hurt.
还没受苦，就别叫苦。
that given a planet only approximately like our own, life is almost certain to start.
如果设想有一颗行星和我们地球的情况基本相似，那几乎肯定会产生生命。