发言人的声音被叫嚷声盖住了，课堂一片混乱，老师们不得不好言相劝。Speakers have been shouted down, classes disrupted, teachers made to grovel.学校组织的出游能让孩子们获得在课堂上得不到的亲身体验。School trips give children firsthand experience not available in the classroom.她在课堂上嚼...
I undid the bottom two buttons of my yellow and grey shirt.我解开了自己黄灰相间的衬衫上最下面的两个纽扣。There's an extra blanket in the bottom drawer of the cupboard.壁橱最下面的抽屉里还有一条多余的毯子。She lay at the bottom of the stairs, whimpering in p...