Ultracentrifugation
[化] 超速离心
🗣️ 情景例句
We've known each other since we were children.
我们从小就认识。
He knows best what good is that has endured evil.
忍过痛受过苦，最知幸福是何物。
I'm very sorry. Usually I'm very careful. I have never lost a book before. It won't happen again.
“很对不起。通常我是非常小心的。我以前从来没有丢过书。这样的事不会再发生了。”