But slower population growth can not only lessen vulnerability to climate change impacts, it also has the potential to significantly reduce future greenhouse gas emissions.
但是减缓人口增长不但能减轻气候变化影响的严重性，也具有显著减少未来温室气体排放的潜力。
A defining characteristic of a pandemic is the almost universal vulnerability of the world's population to infection. Not all people become infected, but nearly all people are at risk.
流行病的一个定义特性是它几乎能导致全球人口被感染，不是所有人都会被感染，但所有人有面临着被感染危险。
An influenza pandemic is caused by a virus that is either entirely new or has not circulated recently and widely in the human population. This creates an almost universal vulnerability to infection.
流感大流行由全新的一种流感病毒或最近未在人群中广泛流行的一种流感病毒引起，几乎无人对其有免疫力。
An influenza pandemic is caused by a virus that is either entirely new or has not circulated recently and widely in the human population. This creates an almost universal vulnerability to infection.
流感大流行由全新的一种流感病毒或最近未在人群中广泛流行的一种流感病毒引起，几乎无人对其有免疫力。
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