Cascade system
[化] 串级系统
🧩 词语组成解析
🗣️ 情景例句
Try putting him across your lap on his stomach.
试试让他趴着睡在你大腿上。
Who is a social worker for the City of Los Angeles.
她是洛杉矶市政府的社会工作者。
It is now standing in the corner of our sitting room.
它现在就站在客厅的一个角落。