The article proposes two kinds of cycloid disc's multiple curve for teethe.
本文提出两种摆线齿轮复合齿廓曲线。
If you know your baby is teething, give her something to teethe on before you nurse.
如果宝宝正在长牙，在喂奶之前给他一些东西让他咬。
If you know your baby is teething, give her something to teethe on before you nurse.
如果宝宝正在长牙，在喂奶之前给他一些东西让他咬。
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