Blue, the color of a first tooth.
蓝色、第一颗牙的颜色！
Low power scanning electron microscope image of tooth surface, computer-coloured yellow on blue background.
牙齿表面的电子显微镜扫描图。
He cried blue murder when the dentist pulled his tooth out.
当牙医给他拔牙时，他大惊小怪地叫喊。
He cried blue murder when the dentist pulled his tooth out.
当牙医给他拔牙时，他大惊小怪地叫喊。
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