小测验：选择正确的单词

1. troy ounce
   金衡盎司
   
2. fluid ounce
   n. 一种液量单位
   

1. An ounce of prevention is a pound of cure.
   (谚)一分预防相当于十分治疗。
2. An ounce of prevention is better than a pound of cure.
   防胜于治。
3. An ounce of prudence is worth a pound of gold.
   一盎司谨慎抵得上一磅黄金
4. That's 62 cents per ounce for overseas mail.
   海外邮件每盎斯62 美分。
5. The measuring cup is graduated in ounces.
   这个刻度杯是以盎司刻度的。

　3个名词解释