Vaccination against swine flu has started in the US and will soon begin in Europe, but many of those who should be first in line are having second thoughts.

美国已开始接种猪流感疫苗，欧洲也将紧随其后。但是，那些本该第一时间内接种疫苗的人们，仍然犹豫不决。

youdao

The partnership’s Global Drug Facility (GDF) is an initiative that aims to improve access to first- and second-line drugs and diagnostics.

这一伙伴关系的全球药物基金（GDF）是一项旨在改善一线和二线药物可获取性及诊断的倡议。

youdao

How many lines are there? There's the first line, the second line, but then there's a line of negative space that runs between them. See it?

纸上有几条线？第一条、第二条，但是这两条线之间的空间也是一条线，看到了吗？

youdao

So doctors must use stronger, "second line" drugs when the first ones fail.

VOA: special.2009.03.25

let's look at the next one here, first or is that second line?

或者说是下一行，好的，如果last减去？

麻省理工公开课 - 计算机科学及编程导论课程节选

The strain is impervious to a wide array of first and second-line drugs.

NPR: TB Traveler Exposes Diagnosis Problems

For confirmed XDR-TB, in which the bacterium is resistant to the most potent first- and second-line TB medicines, the WHO recommends that a proper combination of any medicine left among those available, dictated by knowledge of susceptibility, should be used.

WSJ: The WHO Supports India's Fight Against MDR-TB �� Letters to the Editor

Mr. BROWN: I'll tell you, what happened over the weekend with Usain Bolt winning the men's 100 and Shelley Ann Fraser winning the women's 100 and having the first three ladies across the line, and having first, second and second - it has been celebrated a whole lot here in Jamaica.

NPR: Jamaicans Revel In 100M Olympic Triumphs