T: I do not think I can compare the English learning in China and in Singapore because Singapore treats English learning as a primary language while China treats it as a secondary language.

T：我觉得很难比较在中国和在新加坡学习英语。因为新加坡是把英语作为第一语言的，而中国是把英语当作第二语言的。

youdao

Stainless Steel Wire Type 304 L is very similar to T-304, the difference being the reduced carbon content for better weaving and secondary welding characteristics.

不锈钢304 L是为T - 304非常相似，所不同的降低碳含量，为更好地编织和二次焊接的特点。

youdao

Results:The metaphysis and the periphery of the secondary center of ossification were red marrow. They showed marked enhancement on T 1WI. Enhancement ratio declined in both regions with age.

结果：干骺端骨髓和骨骺二次骨化中心周边骨髓为含有丰富血管的红骨髓，增强后呈显著强化，且干骺端增强率较骨骺骨髓更高，但随年龄增长，两者的增强率均逐渐减低。

youdao

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

If there were just-- if you were trying to create a positive reaction of antigens and it showed up naturally wouldn't it create this reaction anyway in terms of your body would create antibodies like the secondary response volume to antibodies?

如果这里仅有,如果在自然条件下,尝试建立抗原的阳性反应,抗体这是否会像这样反应,以你身体为例,你的身体是否会产生,同二次免疫一样的抗体浓度

耶鲁公开课 - 生物医学工程探索课程节选

One of the things that I didn't mention before is that when you get this primary response and then the secondary response, if you looked at the antibodies that are generated during the primary response, again we're only looking at antibodies that bind to the particular antigen or vaccine that we have used for the priming.

还有一点我之前没有提及,当你获得初次免疫,以及再次免疫之后,如果你仔细观察抗体,观察那些在初次免疫中生成的抗体,这次我们同样只是观察抗体,那些与我们在初次免疫中所用到的,特定抗原或疫苗相结合的抗体

耶鲁公开课 - 生物医学工程探索课程节选

In addition, Mr. Abdulmutallab's cash purchase of a round-trip ticket didn't trigger any secondary screening, calling into question the efficacy of the system that is supposed to spot passengers who are acting suspiciously and may be threats.

WSJ: The Middle Seat | How to Improve Travel in 2010

And, because these aren't widely known blue chips, you'd have to assume that there isn't much of a secondary auction market for them--or for other stars in the Grenache constellation.

FORBES: Grape Juice

Critics also question whether literacy and numeracy will really improve if children aren't really assessed on this until secondary and much of the marking will be done by teachers who aren't qualified in these subjects.

BBC: Q&A: Curriculum for Excellence