Iau
abbr. 国际大学协会（International Association of Universities）；国际天文联合会（International Astronomical Union）
🗣️ 情景例句
Don't mention it.
没事儿。
One cannot always be a hero, but one can always be a man.
人难一世称雄，但可一生为人。
Fine.we're saving a lot of money with it.
不错，节省了不少的钱，