本文的研究工作是紧紧围绕着SAR数据记录器的研制展开的。
This paper is based on the research work of the SAR's data recorder.
然而，虽然竞争紧紧围绕着我们，但合作也是我们生活中至关重要的一部分。
However, although competition is all around us, cooperation is also an essential part of the society in which we live.
他们的脑海中只有一个清晰的目标，而且他们做的每一件事都紧紧围绕着这个目标。
They had one clear goal in mind, and everything they did centered on that goal.
他们的脑海中只有一个清晰的目标，而且他们做的每一件事都紧紧围绕着这个目标。
They had one clear goal in mind, and everything they did centered on that goal.
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