Boresight
检验火器准星校靶, 瞄准线, 视轴
🗣️ 情景例句
Happiness is a personal choice.
快乐是个人的选择。
Would 1:00 be convenient?
1点钟行吗？
I'm sorry I don't know. You'd better ask that policeman over there.
对不起，我不知道。你最好问问那边的警察。