Right now, the recommended dose from food and supplements is about 400 international units a day for most people, but most experts agree that is probably too low.
目前，对大多数人来说建议的食物补剂量约每天400个国际单位，但多数专家认为可能太低了。
Right now, the recommended dose from food and supplements is about 400 international units a day for most people, but most experts agree that is probably too low.
目前，对大多数人来说建议的食物补剂量约每天400个国际单位，但多数专家认为可能太低了。
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