Let's start by reviewing the ways in which the surface of our lips is different from the surface of the skin on the rest of our bodies.
First, our lips don't have the same protective outer layer as the skin elsewhere on our bodies.
您现在的位置: 首页 > 英语听力 > 国外媒体资讯 > 时差N小时 > 正文
Let's start by reviewing the ways in which the surface of our lips is different from the surface of the skin on the rest of our bodies.
First, our lips don't have the same protective outer layer as the skin elsewhere on our bodies.