该项目仅今年一年就培养了50万株树苗，同时还保护着5,000多株成熟的橡树。

This year alone, more than 500,000 saplings were raised, while more than 5,000 mature oak trees were protected through the project.

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这种疫苗是根据最常见的轮状病毒毒株制成的，而且在两年的时间里也能很好地保护人体不受其它一些毒株的感染。

The vaccine is derived from the most commonly circulating strain of rotavirus, and also offered good protection against some other strains across the two-year period.

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我们还注意到，最近出现了新的H5N1型禽流感毒株，有可能导致目前使用的疫苗无法充分保护禽类不受疾病的侵染。

We have also observed that new H5N1 avian influenza virus strains have recently emerged creating the possibility that vaccines currently in use may not be fully protecting poultry against the disease.

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