例句 /

The use of fluoridated toothpaste has proven to be a safe and effective daily oral hygiene practice to prevent caries for billions of people around the world over the last 50 years.

The use of fluoridated toothpaste has proven to be a safe and effective daily oral hygiene practice to prevent caries for billions of people around the world over the last 50 years.

在过去的50多年里,含氟牙膏已经成为一种安全有效的日常口腔清洁护理方法,为全球数十亿人提供防龋保护。