关于你的痤疮，我建议你去请教皮肤病学家。
皮肤病学家早就指出粉刺患者的皮肤看起来老得慢，皮肤变薄、长皱纹来得更晚些。
Dermatologists have long noted that the skin of acne patients seems to age more slowly, with wrinkles and thinning appearing much later.
一代毒理学家和皮肤病学家已经在整个他们的头班参考这卷，在它内找到大量理论和实际的指导。
A generation of toxicologists and dermatologists has consulted this volume throughout their careers, finding within it a wealth of theoretical and practical guidance.
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