但是挑战者七壮士深知其中的危险，他们坚忍不拔，出色地履行了自己的职责。
But they, the Challenger Seven, were aware of the dangers, but overcame them and did their jobs brilliantly.
最近的比赛在七个城市吸引了超过十万名的流行歌星效仿者前来试镜。
The latest competition drew more than 100,000 pop star wannabes to auditions in seven cities.
每七次交通事故就有一次是驾车者困倦造成的。
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