名词
中文翻译：Unknown
同义词：
['observer', 'detector', 'instrument']
例句：
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2.
用于
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3.
用于
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1. The spotting scope was used to identify the target.
使用瞄准镜来识别目标。
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2. The scientist used a spotting scope to observe the stars.
科学家使用观测镜观察星星。
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3. The engineer used a spotting scope to measure the distance between two points.
工程师使用观测镜测量两点之间的距离。