Those are phenomenal sums. In sub-Saharan Africa now nearly their three shots of vaccines, The announcement by the Gates Foundation was made at the World Economic Forum, which runs through January 31st.

VOA: standard.2010.01.29

For example, what if you could make a hepatitis vaccine that was good in one shot instead of three shots?

比方说,如果你研制的一种肝炎疫苗,只需接种一次,而不是三次会怎么样

耶鲁公开课 - 生物医学工程探索课程节选

It's the one where you have to get three shots over a period of six months, and so you have to remember to go back, you get a first ba--you get a first shot, you have to remember to go back after a month and get a second shot, you have to go back after six months and get a third shot.

这种疫苗需要在六个月里注射三次,所以你要记得再去,你第一次,你第一次注射后,你要记得一个月后再去注射第二次,六个月后,你还得再去注射第三次

耶鲁公开课 - 生物医学工程探索课程节选

Historians say thirty-two shots were fired in the space of about twenty-three seconds.

VOA: special.2010.02.15

Ellington made five of his first six shots, including a three-pointer before ending the night with 20 points.

VOA: standard.2009.04.05