慢速英语:The Birthmark by Nathaniel Hawthorne

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chemical - adj. of or relating to chemistry

chemicals – n. elements found in nature or made by people; substances used in the science of chemistry

imperfection - n. a small flaw or bad part

visible - adj. able to be seen

birthmark - n. an unusual mark that is present on the skin from the time when someone is born

Now it's your turn. Do you know of anyone who tries to make other people 'perfect?' Write to us in the comments section.