其目标是，提供一种能抑制所有季节性和流行性流感病毒的疫苗，像接种麻疹疫苗和小儿麻痹症疫苗那样为人们接种流感疫苗。即使不能保证终生免疫，也要保证在几年内为人类提供保护。

The goal is to provide protection for years, if not a whole lifetime, against all seasonal flu strains and pandemic strains, making flu inoculation much more like that for measles and polio.

youdao

总体上，麻痹性贝毒在粤东海域的分布具有明显的地域性、季节性和贝类种间差异。

As for regional distribution, samples collected from Zhelin Bay had wider toxin profiles and higher toxin concentration.

youdao

总体上，麻痹性贝毒在粤东海域的分布具有明显的地域性、季节性和贝类种间差异。

As for regional distribution, samples collected from Zhelin Bay had wider toxin profiles and higher toxin concentration.

youdao