以下三种说法都可以,你可以酌情选用：
sth is harmful to the health of old people and children
sth does harm to the health of old people and children
sth is bad for the health of old people and children
祝你开心如意!
以下三种说法都可以,你可以酌情选用：
sth is harmful to the health of old people and children
sth does harm to the health of old people and children
sth is bad for the health of old people and children
祝你开心如意!