Pinpointing these genetic risk factors could be an important step toward helping explain the higher prevalence in U.S. blacks compared to whites, the researchers said.是什么意思_Pinpointing these genetic risk factors could be an important step toward helping explain the higher prevalence in U.S. blacks compared to whites, the researchers said.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句