Such protection against fungal infection, Dr. Casadevall has speculated, could have been crucial for the triumph of mammals following the age of dinosaurs.

卡萨·德沃尔博士推测，较高的体温对真菌感染的天然屏障，可能是哺乳动物们在恐龙灭绝之后一直繁衍到今天的关键原因。

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He discovered that the activation of a gene called Toll is crucial for switching on the initial immune response that allowed his flies to fight off infection.

他发现Toll基因的激活对启动能帮助果蝇抵御感染的固有免疫反应尤为关键。

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Once infection is suspected clinically, timely diagnosis and treatment are crucial.

一旦临床上怀疑感染，及时诊断和治疗非常重要。

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"It is crucial that national authorities do not rush to give information on source of infection which is not proven by bacteriological analysis, as this spreads unjustified fears in the population all over Europe, and creates problems for our food producers selling products in the EU and outside of the EU."

VOA: special.2011.06.10

Ventilation is the final crucial element to consider in minimizing infection spread.

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Staying ahead of the infection by getting rid of the dead tissue is crucial.

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Crucial variables for such forecasts, like the average time from infection to disease in people, or the variation around that average, simply cannot be determined yet.

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