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
Yes, …is here. Please hold a minute.
是，……在这儿。 请等一下。
That's track 1 at 9:45.
1轨道，9点45分开。
One hour and seventeen minutes passed and we had not even covered half the distance.
1小时17分过去了，走了还不到一半路程。