The soldiers were warned to remain hidden and not to expose themselves.

士兵们受到警告要隐藏好，不能暴露自己。

youdao

And then there are the many activities that by their nature must remain hidden under Cuba's controlled system.

这样在古巴现行的受控制体系下，许多行业因为性质的原因必须继续其地下状态。

youdao

They travel on to the liver and remain hidden away, multiplying rapidly, until there are tens of thousands of them.

这些寄生虫游走到肝脏，隐藏起来，迅速滋长，直至生出成千上万个个体。

youdao

And for the first few weeks, these antibodies are successful, eliminating all but a few viruses that remain hidden away from the body's surveillance systems.

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But his real motivations remain hidden, even probably to himself.

FORBES: Digital Rules

The researchers said in those with severe disease, the body was responding as if it was attacking a virus, enabling the bacteria to remain hidden and replicate unchallenged within cells.

BBC: 'Wrong' immune response aids TB