1. swine flu 猪流感
2. precaution n. 预防措施
I took the precaution of locking money in the safe.
我把所有的钱都锁在保险箱里以防万一。
3. step up 走上; (使)增加, (使)加快速度
The chairman stepped up and declared the meeting open.
主席登上讲台, 宣布开会。
The girl stepped up to school.
女孩子加快步伐去上学。 医.学教.育网搜.集整理
4. quarantine n. (人或动物生病之后被隔离的)检疫期;vt. 对…进行检疫隔离
The ship is still in rigorous quarantine.
该船仍在接受严格的隔离检疫。
5. infect vt. (受)传染; 污染; 影响
Dirt infected an open cut.
尘土会使敞露的伤口受到感染。
Waste gases infected the air.
废气污染了空气。
Mary's high spirits infected all the girls in the class.
玛丽的兴致感染了全班的女孩。
6. panel n. 专门小组
A panel of experts gave its opinion on ways to solve the traffic problem.
专家小组就如何解决交通问题发表了意见。
7. intensify vt. & vi. (使)增强, (使)加剧 医.学教育网整理
The drought has intensified.
旱情加剧了。