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preservation of health; hygiene; sanitation
health education (school subject)
保健の授業で栄養バランスについて学んだ。
In health class, we learned about nutritional balance.
学校には保健室があって体調が悪いとき休める。
The school has a nurse's office where you can rest when you feel unwell.
地域の保健センターで健診を受けた。
I had a health check-up at the local health center.