Cholesterol is fatty substance which is essential for life.
胆固醇是一种生命必须的脂肪物质。
Although it is a fatty substance, it is also a fat emulsifier.
它虽然是不饱和脂肪酸的物质，它也是一个胖乳化剂。
Never use butter or other fatty or oily substance on a burn.
不要将黄油或其他含脂肪和油脂的东西涂于患处。
Never use butter or other fatty or oily substance on a burn.
不要将黄油或其他含脂肪和油脂的东西涂于患处。
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