Good oral hygiene and regular dental care are important, whatever your age.

无论年龄大小，良好的口腔卫生和定期的牙齿保健都非常重要。

《柯林斯英汉双解大词典》

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。

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Helping patients learn good oral hygiene is the job of the dental hygienist.

帮助病人学习口腔卫生室洗牙师的工作。

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You'll need to practice good oral hygiene for life, however, so your gum problems don't return.

CNN: Gingivitis

Good written and oral communication skills.

UNESCO: Criteria & Requirements

While oral contraceptives have a good safety record (and Barr Laboratories' trial of 1, 400 women showed no evidence that Seasonale is riskier than conventional contraceptive pills, except for a higher incidence of irregular bleeding in the first few months of use), Dr Hitchcock is keen to see women exercise caution when it comes to prolonged use of anything containing sex hormones.

ECONOMIST: Controlling menstruation