As historical materials, the two biographies bear out the fact that Pearl Buck was an American descendant, having an American cultural background.
作为史料，这两部传记证明了赛珍珠的美国裔身份，及其美国文化背景。
BACKGROUND and AIM: to study the acute toxicity and genotoxicity of pearl anti-spot cosmetic slice.
背景与目的：研究珍珠祛斑美容片的急性毒性和遗传毒性。
Features and effects: Colorful background printing. The surface of the pattern has the pearl and metal color effect.
特点和效果：多彩的底色印刷，图案表面经过珠光处理，有珠光油墨特有的珍珠银和金属金光泽，高贵典雅。
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