The other vaccine (Shanchol) is pending WHO prequalification and provides longer-term protection against V. cholerae O1 and O139 in children under five years of age.
另有一种疫苗（Shanchol）正在等待通过世卫组织资格预审，该疫苗在5岁以下儿童中对霍乱弧菌和O139提供较长期的保护。
What five steps need to occur to improve A-V communication systems?
为了促进视听传播系统，需要采取哪五个步骤？
The test has also proved that both types of immersion nozzles, one with five holes and the other "v"-shaped design are very effective in decreasing the penetration depths in moulds.
试验也证明了五孔和喇叭形伸入式水口是浇注方坯的两种好的水口形式，这两种水口对减小流股在结晶器内的穿透深度是十分有效的；
V. I notice that there is a five-year gap between your last job and now.
我发现从你的前一份工作到现在，有五年是空白。
V. I notice that there is a five-year gap between your last job and now.
我发现从你的前一份工作到现在，有五年是空白。
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