[译] 我想买三打鸡蛋。
[误] I want three dozens eggs.

[正] I want three dozen eggs.
[注] 名词 dozen 前面加有一个确切的数词, dozen 须用单数, 如:I bought a dozen bottles of beer. 我买了一打啤酒。dozen 的复数常表示一个不确切的数字。如:He had dozens of chances to go abroad. 他有多次出国机会。