The currents are fickle and the boys often must wait an hour after school to catch the right conditions to head home.

水流无常，两个男孩经常要等一小时才能抓住合适的时机往家赶。

youdao

Just plop a few vials on the lawn and some on the sidewalk, wait an hour, and then ship your samples back to the scientists.

你只需要把瓶子放在草坪和人行道上，等上一小时，就可以把样品送回科学家那里。

youdao

Brush too soon after eating - as enamel on teeth is softened after eating especially with sugary foods - it's best to wait an hour before brushing which allows the tooth to harden up more.

进食后——尤其是吃了甜食后——牙釉质会软化，所以最好过一个小时等待牙釉质恢复后再刷牙。

youdao

She had to wait an hour by a pay phone to find someone who wanted to use it, and in his case, it was an emergency call.

CNN: Pay phones: The search for an endangered species

You have to wait half an hour for that revelation, and it's too late.

BBC: Liar

Recalling a trip with American colleagues to Singapore a decade ago, Zhu says he was stopped and asked to wait for an hour at customs while his American colleagues were given a quick OK to pass through.

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