C2
[计] 操作系统安全性级别c2
🗣️ 情景例句
she's still alone, without her family.
她仍是孤单单的，找不到家。
After breakfast,I'll get ready go to work.
在早餐以后，我将准备好去工作。
Our next obstacle was a shallow pool of water about half a mile across.
下一个障碍是一片约半英里宽的浅水塘。