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- 乙型肝炎病毒前S2抗原/抗体检测方法的改进及其应用Improvement of the assay for Pre S2 Ag/Ab detection and its application in different patients
- 前S2抗原（PreS2Ag）Pre-S2 antigen (PreS2Ag)
- 前S2区preS2 region
- 乙肝前S2融合蛋白HBV PreS2 fusion protein
- 前S2抗原Pre-S2 Ag
- 前S2preS2
- 前S2蛋白Pre-S2 protein
- 在前forward
- 乙型肝炎病毒前S2蛋白结合蛋白基因的筛选Screening of the genes of hepatitis B virus PreS2 interacting proteins
- 直前right ahead
- 在前的previous
- 前几年several years ago
- 排行前十名top-ten
- 30年前他还是孩子的时候就离开了家，从此，他家里人一直没有得到他的消息。He ran away as a boy thirty years ago, and his family has never heard from him since.
- 前去go forward; move forward
- 在要减去的数字前有一个减号。There is a minus before the number to be subtracted.
- 30多名党员已经退出了从前的党，成立了一个新的独立的党。Over30 MPs have now broken away from their old party to form a new, independent one.
- 我得把前胎打一下气。I have to get my front tyre blown up.
- 前面板front panel
- 努力向前push on
