Green tea contains both caffeine and an organic compound known as catechin.

绿茶包含咖啡因和一种叫作儿茶酸的有机化合物。

And catechins inhibit the action of lipases, which gives them a minor fat blocking effect.

而儿茶素则会抑制脂肪酶运动，从而产生微弱的脂肪阻隔作用。

And green tea contains beneficial polyphenols called catechins, which may help protect skin from sun damage and skin cancer, according to preliminary research.

绿茶含有一种叫做儿茶素的有益多酚， 根据初步研究，可能有助于保护皮肤免受阳光伤害和皮肤癌。