deciduous tooth eruption

例句：

1. 1. Thebaby's first tooth is erupting today.
   宝宝的第一颗牙齿今天要萌出。
2. 2. During puberty, children lose their deciduous teeth and begin to replace them with permanent ones.
   青春期时，孩子们会失去乳牙并开始用恒牙替换它们。
3. 3. Dental hygiene is important for the proper eruption of deciduous teeth.
   良好的口腔卫生对于乳牙的正确萌出很重要。