A highly stabilized laser produces very fine teeth, enabling highly precise measurements of specific frequencies or changes in frequency.

高稳定的激光可以产生极细的齿，这样可以非常精确的测量特定的频率或频率变化。

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A real optical frequency comb spans the entire visible spectrum of light, and has very fine, evenly spaced teeth.

实际光学频率梳横跨整个可见光谱，各齿极细并均匀分布。

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Still, it's a good idea to mention your child's paci use to the dentist so that she can check his teeth and jaw to make certain that everything is fine.

还是老话，最好提醒宝宝的牙医他有使用奶嘴的习惯，这样牙医就能每次都给宝宝检查好牙齿和下巴，以确保一切正常。

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Surrounded by a bewildering array of credit card processing machines - for some reason each bank issues a different machine - he grins, teeth showing under a fine Turkish moustache.

BBC: Turks see silver lining in EU date

"She's looking fine but is having problems with her wisdom teeth, " said Richardson.

BBC: South East Wales

The 1.3-megapixel front facing cam obviously doesn't take as crisp or detailed shots, but it's perfectly fine for video chatting, awkwardly posing with a friend, or checking your teeth for leftover lettuce.

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