Holmes said Sudanese government efforts to fill the most critical gaps have been inadequate, but have for the moment prevented a secondary humanitarian crisis from erupting.

VOA: standard.2009.06.11

And then when you are 11, you would move on to a secondary school.

然后十一岁的时候，继续上中学。

英国的教育 - SpeakingMax英语口语达人

So, every time you're exposed to a new vaccine or a new antigen you go through this primary response before you have the secondary response.

所以,每当你接触到新疫苗或是新抗原,在再次免疫之前,机体将会经历这样的初次免疫过程

耶鲁公开课 - 生物医学工程探索课程节选

As a result,primary school attendance in Kenya increased by more than one million children and secondary school attendance jumped 10 percent.

VOA: standard.2010.03.04

When you got to be about the age of what you guys are here, Ephebate you might enter the ephebate; Ephebe you'd become an ephebe, and that just meant that you were past your sort of early secondary training and now you were being really in training to be a warrior and a citizen.

等长到差不多你们年纪时，就可以进入;,成为，表明他通过了类似早期中级教育,可以正式接受战士及公民的训练。

耶鲁公开课 - 新约课程节选

What we have today is a situation where children themselves shy away from continuing to secondary school because there is no future."

VOA: standard.2010.05.19

Right, but if you just got the primary exposure, wouldn't the secondary response automatically-- not a booster shot, just the secondary response, because you were exposed?

但这时你已经获得这样的初次免疫,而因为你已经天然感染过该病毒,那么,在没有加强针的情况下,二次免疫是否无法自动发生

耶鲁公开课 - 生物医学工程探索课程节选

In 2009,Sierra Leone President Ernest Bai Koroma launched a review of the education system following abysmal exam results at both the primary and secondary level.

VOA: standard.2010.02.25

"It's recommended that children get 150 minutes of exercise a week at elementary school and 225 minutes in secondary schools and yet they are not.

VOA: standard.2010.03.09