Iad
abbr. 国际天体物理十年（International Astrophysical Decade）
🗣️ 情景例句
Don't worry about it.
别介意。
Don't be anxious if I'm late.
如果我回来晚些也不必担忧。
Yes, there must be over two hundred here.
是呀，这儿一定有200多张。