饮用绿茶可以起到保护牙龈免受疾病侵害的作用，这个可能会影响超过30%群众的说法，使日本发起了新的研究。

Consuming green tea may offer protection against gum disease, a condition that may affect over 30 per cent of the population, suggests a new study from Japan.

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其实流感育苗并不能保护所有接种育苗的人不受流感侵害。然而，尽管人们已经患病，育苗还是会起到一定的抑制病毒的作用。

But, flu vaccines do not protect everyone who gets them. Still, even if a person does get sick, the vaccine can limit the effects of the virus.

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片害共栖有机体之间共生的作用关系，一个物种受另一个物种侵害或抑制，而后者不受前者的影响。

A symbiotic relationship between ORganisms in which one species is harmed OR inhibited and the other species is unaffected.

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