used to specify the hour when telling the time
…点钟
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the gates will open at eight o'clock .大门8点钟开。
used following a numeral to indicate direction or bearing with reference to an imaginary clock face, 12 o'clock being thought of as directly in front or overhead
…点钟方向(或航向)(指以假设的平放或竖放的钟面时针为指示方向,12点表示正前方或正上方 )。