吃一堑长一智，他这个教训来之不易——是从他自己的亲身经历中得来的。He learned this lesson the hard way from his own personal experience.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.亲身体验过贫穷to ha...
Now and then they heard the roar of a heavy truck.他们不时地听到大卡车的轰鸣声。A roar of approval resounded through the Ukrainian parliament.一片赞成声在乌克兰议会中回响。Local residents saw it plunge towards Earth with a deafening roar.当地的居民看见它伴着一声...