His parents kept a round-the-clock vigil at his bedside.

他父母日夜守护在他的床边。

《牛津词典》

To hear Sandra and Britney tell it, raising a kid on their "own" (read: with round-the-clock help) is a piece of cake.

听听桑德拉和布兰妮说的，自己“一个人”（注：在全天候有人帮助的情况下）养孩子非常容易。

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Globally, a third of Sumatran cubs in zoos don't make it to adulthood, so I decided to give them round-the-clock care at home.

在全球范围内，动物园里三分之一的苏门答腊老虎幼崽活不到成年，所以我决定在家里全天候照顾它们。

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Today, consumers, accustomed to the ease of use, want more flexibility. (Take note Apple: a software upgrade that allowed users to change their screen display, such as adding a big round clock or introducing tiles, would create a real buzz.) Ironically, because Apple was instrumental in a big part of the proliferation of technology for the consumer, consumers, in a way, have outgrown Apple.

FORBES: Was Apple 'MySpaced'? Is Google Next?

In part, that is a dig at News 24, a round-the-clock news channel, which is a bugbear of Mr Smith's.

ECONOMIST: The BBC

At a council meeting on Wednesday the Fire Authority agreed a proposal for round-the-clock cover using a smaller fire engine and fewer crew.

BBC: Windsor fire station 24-hour cover proposal agreed