And those are the variants that experts are keeping close tabs on.

而这些变异正是专家密切关注的。

Wastewater tracking could also be useful for spotting new variants.

废水追踪还能有助于发现新变异。

Many of the cases there are new variants or versions of the disease.

许多病例出现了新的突变或疾病类型。

But with threats of new COVID variants nothing could be less certain.

但随着新型冠状病毒的变异，任何事情都可能那么确定。

The WHO has expressed concern about the spread of new coronavirus variants.

世界生组织对新型冠状病毒变种的传播表示担忧。

Experts believe Omicron is less severe than other COVID variants.

专家认为奥密克戎的“毒性”没有其它变异毒株强。

Now we're not going to cover every single variant in today's video.

打算在今天的视频中介绍每一种变化。

There will be some variants, some cafes will pay more to staff, some pay less.

会有一些变化，一些咖啡馆会付给员工更多的钱，一些会付给员工更少的钱。

Why has it been designated as a " variant of concern" ?

为什么奥密克戎被称为“关切变异株”？

The " Delta variant" is blamed for this increase.

" 德尔塔变异毒株" 是此增长的罪魁祸首。

The authority are concerned about variants around the world.

当局担心的是世界各地的病毒变体。

The CDC says that even fully vaccinated travelers risk getting and spreading COVID-19 variants in Japan.

美国疾病管制与预防中心（CDC）表示，即使是完全接种疫苗者也有可能在日本感染和传播变种新冠病毒。

Researchers said it may be due to more dangerous virus variants or to school re-openings.

研究人员表明，这可能是由更加危险的病毒变体或学校重新开学所致。

The omicron variant is even more transmissible.

奥密克戎变种的传播性更强。

New variants of the virus are being reported.

该病毒的新变种已经被曝光。

Over 500 cases are related to the Omicron variant.

其中 500 多例与奥密克戎病毒变体有关。

And the Indian variant is spreading.

印度的病毒变种正在传播。

Jobs growth slowed in August as the Delta variant surged.

德尔塔变异毒株抑制了八的就业增长率。

You must pay attentionto the variant spellings of the words.

你要注意这些单词同的拼法。

The variant has now been reported in 77 countries.

目前，该病毒变种已经在77个国家出现。