Restrictions have recently tightened further because of new variants.

由于毒出现了的变体，限制最近进一步收紧。

New variants or strains of COVID-19 are appearing around the world, as it mutates like other viruses do and one big question being asked is, will existing vaccines protect people against the new versions of coronavirus?

全球范围内正在不断出现毒的变体或毒株，当它像其他毒一样变异时，一个很严重的问题是，现有的疫苗能否人们免受毒的变种毒株的感染呢？

But with cases of Covid infections still in the millions, and doctors warning about new variants of the disease, is the pandemic really coming to an end?

但是肺炎感染例仍有数百万例，而且医生警告称这种疾有变体，这场大流行真的要结束了吗？

They've released almost 700 new plant variations since 1927.

自1927年以来，他们已经发布了近百个的植物变体。

The presumption is that further mutations are arising in a tumour all the time, and that eventually one of them makes a molecular change that nullifies the effect of the drug.

其机制可能是，癌细胞会不断地产生的突变体，最终其中的某个突变体编码产生了使药物作用失效的蛋白分子。

Just 15% of people in the U.S. ages 5 and older have gotten a bivalent booster, according to the CDC, which means many people are currently not as protected as they could be against the new variant.

根据美国疾控制与预防中心的数据，在美国5岁及以上的人群中，只有15%的人接种了二价疫苗，这意味着许多人目前对这种变体的度没有达到应有的水平。

" only if countries are looking and testing effectively, will you be able to pick up variants and adjust strategies to cope" .

" 只有当各国能够有效地观察和检测到毒变体时，医疗机构才能够调整应对策略。"

A US scientist says vaccinations and precautions can help stop the rise of new COVID-19 cases driven by new variants.

一名美国科学家表示，接种疫苗和预防措施可以帮助阻止肺炎变体例的增长。

There is growing concern in the U. S. over a spike in COVID-19 infections tied to a new Omicron variant.

在美国，人们对与奥密克戎变体有关的毒感染例激增关注加大。

Russia says it's started developing a new version of the Sputnik vaccine adapted to the new COVID-19 Omicron variant.

俄罗斯表示，已开始开发一种适应毒变体 Omicron 的版 Sputnik 疫苗。

Health officials say variants, new mutations of coronavirus may increasingly threaten the U.S., as they have other countries.

卫生官员说，与其他国家一样，状毒的变体，突变可能会越来越多地威胁美国。

Ten people had been hospitalized with the new variant, despite most of them being fully vaccinated.

有10人因感染这种变体毒而住院，虽然他们中的大多数人已经接种了疫苗。

COVID-19 hospital admission and death rates are going up, and new omicron variants are being blamed.

肺炎的入院率和死亡率都在上升，的奥密克戎变体被认为是始作俑者。

The World Health Organization is seeking a global treaty between nations on responding to pandemics amid growing concerns over the new COVID-19 Omicron.

在人们对毒的变体 Omicron 越来越关注的情况下，世界卫生组织正在寻求在各国之间达成一项应对疫情的全球条约。

The WHO chief was speaking at the start of a three-day special session of the World Health Assembly on Monday amid growing concerns over the new Omicron coronavirus variant.

世卫组织负责人在周一举行的为期三天的世界卫生大会特别会议开始时发表讲话，当时人们对变体 Omicron 的担忧越来越大。

You know, I think it's interesting that the variant, at least for me, it's definitely caught me off guard, every time there is a new variant, you know, Omicron, Delta, Alpha, all the ones you've mentioned.

你知道，我认为这个变体很有趣， 至少对我来说，它肯定让我措手不及， 每次有一个的变体， 你知道的，Omicron、Delta、Alpha，所有你提到的。

The reality is most new variants, these things that lawyers are so damn special that they're needed to resolve those, they're just rest areas, and they haven't realized that the rest areas are not exit ramps.

现实是，大多数出现的变体——那些律师们自认为非常特殊、非他们不可解决的问题——其实只是休息区，而他们还没意识到，这些休息区并不是出口匝道。

He would often add or delete one of those elements to create a new word, or a new variation of an existing word.

他常常会添加或删除其中一个元素，以创造一个词，或是一个现有词汇的变体。

And, at the same time, if you think about production, each time a company creates a new variation of a product, production costs go up.

而且， 与此同时， 如果您考虑生产，每次公司创建产品的变体时，生产成本都会上升。

And as I noted, a new variation was added to the list in the early 1600s when the word run appeared to refer to the same type of stream.

正如我所提到的，在17世纪初，当“run”一词出现以指代同类型的溪流时，这份清单上又增添了一个的变体。