新的疟疾疫苗通过安全测试
2011-09-10来源:VOA
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词汇讲解:
1. vaccine n. 疫苗;痘苗
例句:She takes a vaccine against influenza every fall.
她每年秋季接种流感疫苗。
2. handful asj. 一把,一握
例句:I drew a handful of coins from my pocket.
我从口袋里摸出一把硬币。
3. parasite n. 寄生生物;寄生虫;寄生植物; 依赖他人过活者;靠他人为生的人
例句:I don't want to be a parasite. I must earn my own way in life.
我不想做寄生虫, 我要自己养活自己。
4. trigger vt. 触发,引起
例句:His action has triggered off a crisis.
他的行动已经引起一场危机。
5. generate vt.生成, 产生;引起, 导致
例句:This book will continue to generate excitement for a long time.
这本书将在很长一段时间里继续使人们为之激动。
6. obstacle n. 障碍(物), 妨碍
例句:She felt that her family was an obstacle to her work.
她感到她的家庭妨碍她的工作。
7. isolate vt. 使隔离, 使孤立, 使脱离
例句:A chemist can isolate the oxygen from the hydrogen in water.
化学家可以把水中的氢和氧分离开来。
8. simulate vt. 模仿, 模拟
例句:A sheet of metal was shaken to simulate the noise of thunder.
猛力抖动金属片以模仿雷声。
9. switch vi. 改变;转移
例句:He studied chemistry and then switched to biology.
他原来学化学,后来改学生物。
10. complicate vt. 使复杂化
例句:These events will greatly complicate the situation.
这些事件将使局势变得极其复杂。
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