She was admonished for chewing gum in class.她在课堂上嚼口香糖，受到了告诫。Maybe you fall asleep in class because of uncorrected astigmatism.也许你在课堂上睡觉是因为你的眼睛散光.The teacher told the children to stop chattering in class.老师叫孩子们在课堂上不要叽叽喳喳讲...

adv.上课中...

in class的音标：in class的英式发音音标为：[in klɑ:s]in class的美式发音音标为：[ɪn klæs]...