Tooth decay happens when teeth are attacked by acid, and this can happen in two ways.
蛀牙发生时,牙齿受到攻击,酸, 这可以发生在两个方面.
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目的: 评价半导体激光漂白四环素牙的临床效果和安全性.
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我们奋斗了多年,看到一支新的乐队反而超越了我们,真让人大失所望。
《柯林斯高阶英汉双解学习词典》
Canine teeth are for piercing and killing prey, and tearing flesh...
犬齿用来咬穿、咬死猎物,还可以撕肉。
《柯林斯高阶英汉双解学习词典》
Occasionally he d approach, lips taut, exposing a nervous smile full of chattering teeth.
偶尔他也会走近, 双唇绷紧, 牙齿打战,露出一个紧张的微笑.
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Spinosaurus'teeth were hollow, which means they were nowhere as strong as T-Rex's.
而棘龙的牙齿中间是空的, 那就是说它的牙齿远不及霸王龙的强壮.
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