Aperturing
孔径作用
🗣️ 情景例句
But if you and Daddy wanted to,
但是假如，你和爸爸想搬的话，
Do you have glue? I need some here.
你有胶水吗？我这里需要一点。
To escape from the Earth in a rocket, one must travel at seven miles per second.
要乘坐一枚火箭飞离地球，火箭的速度要达到每秒7英里，