a lot of people or things 许多;很多 :They arrived in dozens (= in large numbers).他们大批到达了.◊ I've been there dozens of times.我到那里去过很多次.
有很多风险因素会导致心脏病.
a lot of people or things 许多;很多 :They arrived in dozens (= in large numbers).他们大批到达了.◊ I've been there dozens of times.我到那里去过很多次.
有很多风险因素会导致心脏病.