Collimator
n. 准直仪\\n[化] 准直管; 平行光管
🏥 医学释义
准直器，平行光管
🗣️ 情景例句
I have tea with y colleagues in the afternoon.
下午我和同事喝茶。
I know the boy whose father is a manager.
我知道那个男孩的父亲是经理。
Have they ever been there before?
他们以前去过那儿吗？