Perifocus
近焦点; 近主焦点
🗣️ 情景例句
Television is the most powerful tool of persuasion that man has ever created.
电视是人类所创造的最有威力的游说工具。
May I pay by credit card?
我可以用信用卡付款吗？
Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere.
一旦我们找到这样一颗行星，我们就要想办法将它的恒星射过来的光线遮暗，这样我们就能彻底“看见”这颗行星，并分析它的大气层。