Guard conditions control which transition, among a set of alternatives, is triggered by the completion of an activity.

守卫条件控制着在某项活动完成后触发一套备选方案中的哪一个跃迁。

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Happy people know that they must exercise mastery in their lives, show control in their life in order to guard against feelings of being helpless and victims.

快乐的人都明白，他们必须做生活的主人，把握好自己的生活，以免产生无助无奈和受害者的情绪。

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The Coast Guard described a rather grim scenario, where 11 of the 126 workers are missing from the Deepwater Horizon, which continues to burn out of control.

海岸警卫队描述了非常骇人听闻的景象，深水地平线126名工作人员中有11人失踪，而形势逐渐失去控制。

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At least since the eighteenth century, these lines have been singled out for their beauty and, considering that Milton is describing the hideous demons under Satan's control, the pastoral elegance of this little simile really catches us off guard.

至少从19世纪起，这些句子因为它们的美感经常被单列出来，并被认为是弥尔顿在描述撒旦控制下的可怕的恶魔,这个小比喻诗歌上的优雅,确实使我们毫无防备。

耶鲁公开课 - 弥尔顿课程节选

And, I really think it was those photographs, the impact of those photographs internationally, during a time of the Cold War, when, the actuality of some of what America didn't talk about, was shown to the world, that that is what made the president act, take federal control of the Arkansas National Guard, and send paratroopers to Little Rock.

CNN: Eckford: Central High in 1957 'was not ... a normal environment'

He finished eighth in the title race and was preparing for the 2011 season when taking part in the Ronde de Andorra rally in Italy in a private capacity he lost control of his Skoda Fabia, crashing into a guard rail.

CNN: STORY HIGHLIGHTS

SABA, citing sources in Yemen's Coast Guard, said seven other fishermen escaped on a small boat prior to the pirates' taking control of the fishing boats.

CNN: Somali pirates capture 2 Yemeni boats, crew members