Qn
abbr. 问题（question）；（国际象棋中的）后翼马（queen's knight）
🗣️ 情景例句
It was not until yesterday that I noticed it.
我一直到昨天才注意到它。
Custom rules the law.
习俗影响法律。
Because the Moon has only an eightieth of the Earth's mass,
因为月球的重量只有地球的1/8，