单词	dark matter
释义	dark matterˈdark ˌmatter noun [uncountable] technical a type of matter that scientists think may exist. It cannot be seen but seems to affect the movements of stars
随便看	Roosevelt, Eleanor Roosevelt, Franklin D. Roosevelt, Theodore roost rooster root root beer root canal root crop rootle rootless rootlessness Roots roots reggae rootsy root vegetable rope rope ladder ropey Roquefort ro-ro Rorschach test rosary rose roseate

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