那油腻腻的东西便是皮脂，便是已经死翘翘的脂肪细胞，等同于羊毛脂，而它却被冠冕堂皇地用于制蜡。

That sticky substance is sebum, which is made from the delightful recipe of wax and the remains of dead fat-producing cells.

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表皮是叶子表面一种蜡一样的物质，随着叶子生长，因此观察叶子表皮和观察叶子最外层细胞——上皮——基本是一样的。

Cuticle is a waxy substance laid down on the leaf surface as it develops, so looking at leaf cuticle is essentially the same as looking at a leaf's outermost cells - the epidermis.

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胆固醇是一种蜡状物质，除了其它方面功能，它还是机体细胞细胞膜的构成成分。

Cholesterol is a waxy substance that, among other things, provides structure to the body's cell membranes.

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