Many people were holding down three jobs just to keep up with the Joneses.

许多人做三份工作仅仅只是为了与他人攀比。

《柯林斯英汉双解大词典》

By tracking down people who have been in contact with COVID-19 patients, health researchers can warn them, and keep COVID-19 from spreading further.

通过追踪与新冠肺炎患者接触过的人，卫生研究人员可以提醒他们，并阻止新冠肺炎的进一步传播。

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Write them down so you can keep your mind stimulated with future endeavors.

将其写下来，这样你就可以为要努力的将来而兴奋起来。

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While this lab maybe deep in an underground lair, they keep it real down there with goal of testing under real world environments.

ENGADGET: So you want to test HDTVs, eh? HD

If we want to keep costs down in a sector with high levels of consumption and opaque prices we need to increase supply and make prices more transparent.

FORBES: Twenty Percent of New Healthcare Waivers Are In Nancy Pelosi��s District

But trusty Lara knuckled down with Chanderpaul to keep the hosts' momentum going.

BBC: SPORT | Cricket | International Teams | West Indies press home advantage