Cascade system
[化] 串级系统
🧩 词语组成解析
🗣️ 情景例句
Please wait a second.
请稍等。
As soon as you have drunk, you turn your back upon the spring.
忘恩负义。
Though a little suspicious this time, the policeman gave him the same answer.
虽然那位警察这次有点疑心，但还是对他作了同样的回答。