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1. The binoculars are very useful for hunting and bird watching.
这些双筒望远镜在狩猎和观鸟时非常有用。
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2. The astronomers used the binoculars to observe the stars.
天文学家们使用双筒望远镜观察星星。
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3. The binoculars were a great help in spotting the target during the game.
双筒望远镜在比赛中帮助发现了目标。