If the tooth isn't kept clean by toothbrushing and dental flossing, the pain will be more severe.

假如没有利用刷牙或牙线把牙齿保持清洁，那么会疼得更厉害。

youdao

If the tooth isn't kept clean by toothbrushing and dental flossing, the pain will be more severe.

假如没有利用刷牙或牙线把牙齿保持清洁，那么会疼得更厉害。

youdao