巧克力爱好者的坏消息：它可能对你的视力没有帮助

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chocolate – n. a food that is made from cacao beans and that is eaten as candy or added to other sweet foods

aspect – n. a quality, detail or part of something;

sample – n. a small amount of something that gives you information about the thing it was taken from

benefits – n. a good or helpful result or effect

scanner – n. a device that reads or copies information or images into a computer

blood vessels – n. a small tube that carries blood to different parts of the body