She spread out her arms, not knowing what to do.

她扎煞着手，不知该干什么。

《新英汉大辞典》

This was because the pandemic virus spread faster than would be expected if there were widespread immunity to it, and because antibodies to the seasonal vaccine do not cross-react with it.

这是因为大流行病毒比预料传播更为迅速，即使对它有普遍免疫性，季节疫苗的抗体与它也没有交叉作用。

youdao

“It’s not intended to totally block infection, ” she said. “But what it can do is greatly reduce disease and spread and symptoms.”

她说，“不要指望它能完全阻止病毒感染，它能做的就是最大限度地减轻病情、限制疾病蔓延、减少疾病症状。”

youdao

But experts say non-communicable diseases -- those that do not spread from person to person -- are the leading killer today.

VOA: special.2011.05.11

"And so therefore we have taken a deliberately hardline approach to this regime because we do not want this coup culture to spread elsewhere in the Pacific."

VOA: standard.2009.11.04

"For the health sector, it will be to be ready to cope with a disease, which will spread in areas where they do not spread or which may become more serious,".

VOA: standard.2009.08.30

Vision gives robots the power not only to do more in factories, but also to spread into other industries, such as the food and drinks business, which struggles to find people to do lots of boring, repetitive and unpleasant jobs.

ECONOMIST: Robots: Nothing to lose but their chains | The

But we do not want military nuclear weapons to spread, and we are clear on that.

WHITEHOUSE: THE WHITE HOUSE

"Scientists do not know to what extent flu viruses spread through the air or whether infection requires physical contact with contaminated fluids or surfaces, " a summary of the report says.

CNN: Report on handling H1N1 cases: Use masks with airtight seals