Authorities say the virus has been spreading undetected for a week.

当局表示，该病毒已经隐匿传播了一个星期。

They need to get separated again so they can be spread out evenly for the next step.

接着要再次进行分离，好让它们在下个步骤中能分散均匀。

The lockdown has exacerbated a problem that has been spreading in many developed nations for decades: loneliness.

孤独。

The blaze has been spreading from remote forest for at least a month and now covers nearly 3 million hectares.

这场大火从遥远的森林蔓延而来，烧了至少1个月，目前已蔓延了近300万公顷。

Those who flatter their neighbors are spreading nets for their feet.

谄媚邻舍的，就是设网罗绊他的脚。

For example, ring-necked parakeets, an Asian and African species, have been spreading through Britain for several decades.

例如，环颈长尾小鹦鹉是一种亚洲和非洲物种，几十年来一直在英国蔓延。

The grasses are long-lived, too. The vast meadow in Formentera is thought to have been spreading for tens or hundreds of thousands of years.

这些草也很长寿。福门特拉广阔的海草床据悉已经蔓延了数万年甚至数十万年。

Some time after this, the lion was caught in a strong net made of ropes, that had been spread for him in the forest by some hunters.

过了一阵子后，狮子不幸被猎人设在森林中的网困住了。