Methods: 68 coke oven workers were chosed as exposing group and 30 health people without any occupational exposure history of carcinogen were chosed as the control group.
方法：以炼焦工人68例为接触组，无任何职业致癌物接触史的健康体检者30例为对照组。
Exposed pairs of identical tiles (Flower and Seasons tiles in the same group being considered identical) are removed from the layout one at a time, gradually exposing the lower layers to play.
暴露对相同的瓷砖(花和季节瓷砖在同一组被认为是相同的)被从布局，逐渐暴露出低层玩。
This summer, members of the animal rights group PETA went undercover at an 'alligator factory' that provides skins for Hermes, exposing that the creatures were kept in terrible conditions.
今年夏天，数名来自动物权益保护组织——善待动物组织(PETA)的成员，潜入一家为爱马仕提供鳄鱼皮的‘短吻鳄工厂’做卧底，将这些鳄鱼所处的极糟糕的环境曝光。
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