大约dàyuē〈副词adv.〉 1.表示估计的数目不十分精确(句子里有数字){probably; approximately [indicating an estimated, rather than exact, number (with a certain number following within the same sentence)]}: 他～有六十开外了。{He is probably on the wrong side of 60.} 2.表示有很大的可能性{most probably}: 他～是开会去了。{He has probably gone to a meeting.}