Cascade system
[化] 串级系统
🧩 词语组成解析
🗣️ 情景例句
It's important for you to keep a cool head at this moment.
这时候保持头脑冷静是很重要的。
I went to sleep immediately and slept soundly all night.
我很快地入睡了并且整夜酣睡。
When there is no one in the office, you can leave the answering machine on so that people who call you up can leave a message.
当无人在办公室时，你可以打开留言机，这样打电话给你的人就可以留言了。