The buoy, which resembles a giant yellow flying saucer with a black tube sticking through the middle, was anchored in 140 feet of water.
这个浮标像一个巨大的黄色飞碟，中心挺着一根黑管子，锚定在140英尺深的海水中。
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The Intelligent water level meter by the buoy is designed to meet the need of water discharge auto-measurement at the outlet of irrigation channel of the Yellow River.