如何使用 "dozen" 造句

1. He altered several dozen entitlement formulas and health-care payments .
他改变了几十权利公式和医疗支出。
2. He chose several dozen new tax cuts and tax increases .
他选择了几十个新减税额和税收的增加而增加。
3. One recent chilly afternoon , only a few dozen spectators showed up .
最近某个寒冷的下午,那里只迎来了几十位观众。
4. A bsf can produce several dozen liters of clean water in an hour .
一套bsf系统在一个小时内可以产生几十升清洁的水。
5. On the positive side , there are several dozen drugs in clinical trials .
从积极的方面说,现在正有几十种药物处于临床试验阶段。