养成良好的卫生习惯。
To keep gums healthy, practice good oral hygiene.
想保持牙龈健康，就需要良好的牙龈卫生。
How can you practice good sleep hygiene?
如何做好睡前准备？
We should practice good dental hygiene by brushing our teeth every morning and at night.
我们应该养成良好的口腔卫生，每一天早上和晚上刷牙这件事。
We should practice good dental hygiene by brushing our teeth every morning and at night.
我们应该养成良好的口腔卫生，每一天早上和晚上刷牙这件事。
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