Mechanical system
[计] 力学系统, 力学体系\\n[化] 力学系; 力学系统
🧩 词语组成解析
🗣️ 情景例句
That's right. What should we do when we find a shortage in the shipment?
这很对。要是我们发现货物短缺，该怎么办？
Have you been listening?
你有没有在听啊？
Tony speaks English and he plays tennis.
托尼会说英语，打网球。