object lesson实物: material object in kind; ent ...教学: teaching; education teaching ...课: class直观教学课: object lesson实物教学课: object lesson下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:实物教学课, 直观教学课，即可在微信中查询翻译
