threefoleadj.三倍；增加二倍；三重的；三方面的；三次adv.三倍；增加二倍；三重地；三方面的；三次threenum.三n.三；三个adj.三个的three distinct layers三个明显层Three-Self movement三自运动Three men in a basket三人同篮three-column ledger三栏式总账three-step approach三步法three-phase furnace三相电炉three-tier councils三层议会three deflective sign三偏征three tourism markets三大旅游市场three hundred and one(=301) 三百零一

1. The baby is three months old.
   孩子三个月大了。
2. The job in question is available for three months only.
   所谈到的这一工作空缺为时仅三个月。
3. It took him three months to be able to run a mile.
   要能跑一英里需要他三个月。
4. The ship has spent three months at sea.
   轮船已在海上度过了三个月。
5. Imports in the first three months have increased by 10 per cent compared with the corresponding period last year.
   第一季度的进口额与去年同期相比增长了百分之十。
6. The newspaper ceased to appear after an existence of three months.
   该报发行3 个月后停刊了。
7. My friend has been in Israel for three months.
   我的朋友在以色列呆了有三个月了。
8. I've been studying Spanish for three months.
   我学西班牙语已经三个月了。