Boresight
检验火器准星校靶, 瞄准线, 视轴
🗣️ 情景例句
He'll do anything to avoid getting down to math lessons,
他老是设法想逃避数学，
Bill was very jumpy as he waited for the phone to ring.
贝尔忐忑不安地等着电话来。
Have you got a hat, sir?
先生，您有帽子吗？