儿童的脸太小，不能与呼吸防护口罩正确密合，有效发挥防护效果。

Children's faces may be too small for the respirators to fit properly and provide protection.

youdao

儿童的脸太小，不能与呼吸防护口罩正确密合，有效发挥防护效果。

Children's faces may be too small for the respirators to fit properly and provide protection.

youdao