The new study included 785 children who were in third grade at the start of the trial. Most were white -- 81 percent -- and half were female.是什么意思_The new study included 785 children who were in third grade at the start of the trial. Most were white -- 81 percent -- and half were female.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句