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- There is widespread concern that the viral strain that could eventually cause a pandemic will be a mutated form, invalidating the stockpiles based on the current epidemic strain. 人们广为担心，最终导致流感大流行的病毒将是一种变异的毒株，这将会使基于目前流行毒株所生产的库存疫苗完全失效。
- A review on maize dwarf mosaic disease is presented,including its symptom,distribution,damage,host range,viral strain,viral transmission and control method.Future directions for the research of maize dwarf mosaic disease are also recommended. 介绍了玉米矮花叶病的症状、分布、危害、寄主范围、病毒株系、病毒传播及防治方法等方面的研究进展。
- Each year, the World Health Organization recommends the viral strain composition of the influenza vaccine for the coming season according to the prevalence of influenza viral strains in the community. 每年,世均会根据社区中流感病毒品种的出现情况,为即将来临的流感高峰期使用的流感疫苗发出病毒成分建议。
- Various types of influenza viral strains can cause human influenza and avian influenza. Major changes in the genetic make-up of the virus may even result in an influenza pandemic. 不同品种的流感病毒可引致人类流行性感冒及禽流感,若流感病毒的基因出现重大改变,更可能引致流感大流行。
- When two viral strains infect the same cell, their gene segments can reassort just like figures on a slot machine, forming new combinations and thus novel versions of the virus. 当两种品系的病毒感染同一个细胞时，其中所带各段基因，就会像吃角子老虎上头的数字一样，重新配对而形成新的组合，也就是新品系的病毒。
- This strain of wheat can grow during a cold spring. 这种小麦可以在寒冷的春天生长。
- CONCLUSION: Sequential approach of alternate rounds of lamivudine or interferon may help patients to tolerate a prolonged schedule of therapy and protect them from emergence of viral strains. 结论：交替使用轮拉米夫定、干扰素的序贯方法，有助病人忍受长期治疗并免于出现病毒株变异。
- The study of viruses and viral diseases. 病毒学一种病毒和病毒性疾病的研究
- He finally break down under the four-hour's strain. 在四小时的压力下他终于支持不了。
- Paying all the bills is a strain on my resources. 支付所有这些费用是我经济上的一大负担。
- Her speech continued in the same dismal strain. 她以悲伤的语调接著往下说。
- Could you stand the strain? Oh, that's nothing. 这样累你受得了吗？这没什么。
- He broke under the strain of heavy work. 他在繁重工作的压力之下累坏了。
- There's a strain of madness in the family. 那一家人都有点疯疯颠颠的。
- He was breaking up under the strain. 他劳累过度，身体逐渐衰弱。
- The official was warned not to strain his power. 那个官员受到警告，不可滥用职权。
- He pitched his story in a sentimental strain. 他把故事写得带有伤感情调。
- Strain began to tell on his health. 过度劳累开始影响他的健康。
- We'll finish the job at full strain. 我们将竭尽全力来完成此项工作。
- We should strain every nerve to do the work. 我们应该竭尽全力来做这项工作。
