翻譯原文：

“生、旦、凈、丑”是京劇中的角色分類?！吧笔悄行哉娼巧?，“旦”是女性正面角色，“凈”是性格鮮明的男性配角(supporting role)，“丑”是幽默滑稽的人物或反面角色。每種角色都有表明身份的臉譜(facial make-up)和扮相(costume)，只要演員一上場，你一看便知。在人的臉上涂上某種顏色以象征這個人的性格和品質(zhì)、角色和命運，是京劇的一大特點，也是理解劇情的關(guān)鍵。簡單地講，紅臉含有褒義，代表忠勇(valor);黑臉為中性，代表猛(vigor)智;黃臉和白臉含貶義，代表兇詐。

參考譯文：

Sheng, dan, jing, chou are different types of roles in Peking Opera. Sheng is the positive male role, dan the positive female role, jing a supporting male role with a distinctive character, and chou the clown or a negative character. Each type of role wears its own facial make-up and costume that suggest the identity as soon as/the minute/the moment/the instant he/she appears on the stage. One striking characteristic of Peking Opera is the color painted on the face of a character that shows his/her role, destiny, quality, and personality. This is the key to understanding the plot. To put it simply, red is positive, symbolzing loyalty and valor; black, neutral, representing vigor and wisdom; yellow and white, negative, suggesting cruelty and deceptiveness.