Dry mouth-it is helpful to drink plenty of water, chew gum, and clean teeth daily.

口干，它是有帮助的多喝水，嚼口香糖，每天清洁牙齿。

youdao

Dry mouth-it is helpful to drink plenty of water, chew gum, and clean teeth daily.

口干，它是有帮助的多喝水，嚼口香糖，每天清洁牙齿。

youdao