Optical system
[计] 光学系统\\n[化] 光具组
🧩 词语组成解析
🗣️ 情景例句
I know it!
我知道！
The chance to enter the college came and he took it.
有一个上大学的机会，他抓住了这个机会。
A radio message from the mainland had been received by the ship's captain instructing him to give up the search.
返航前，该船船长收到了大陆发来的电报，指示他们放弃这次搜寻。