Secondary(optical)axis
[化] 副轴; 副光轴
🗣️ 情景例句
That's a very interesting question.
这是个非常有趣的问题。
To have a grandson
有了孙子
Let me see. Er, I've been here for just over two years.
让我想想。嗯，我到这儿刚好两年多时间。