We must be aware that their teeth may be undergoing dramatic changes as milk teeth are replaced by permanent molars and incisors.

  • 我们必须注意它们的牙齿可能会经历重大的变化,乳牙会被永久的臼齿和门牙所代替。

  • 互联网摘选 2025-01-19 22:20:03

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句