One is a quick-acting "rescue" medicine taken when needed to stop asthma symptoms.

VOA: special.2009.07.28

If you can block one of those people from getting the vaccine, you also stop-- from getting the disease-- you also stop all the people they would have transmitted it too from getting a disease.

如果你可以防止一个人感染疫苗,你同样可以防止...,刚才应该是感染疾病...,你就同样可以防止所有,可能已经接触过病毒的人群患病

耶鲁公开课 - 生物医学工程探索课程节选

(SPEAKING) They have come to Washington from across the country in a combative mood with one mission in mind - to stop President Obama's health care bill.

VOA: standard.2010.03.18

They object to the cost of the proposal, which could go as high as $one-trillion over 10 years, and they want to stop what they see as an expanding role for government in administering health care.

VOA: standard.2009.07.31

(RECORDING) Erekat said President Abbas will tell Mitchell that if the United States does not succeed in convincing Israel to stop the settlement expansion, it will - in Erekat's words mean that no one in the Arab world will believe that Mr.Obama can ultimately convince Israel to end its occupation of the West Bank.

VOA: standard.2009.09.14