今天我们要学的词是 conventional. Conventional 形容词，常规的，传统的。A new study shows that e-cigarettes are much less addictive than conventional cigarettes. 一项最新研究显示，电子烟的上瘾程度远远低于传统香烟。Iowa is developing an app to put driver's licenses on smart-phones, taking the place of conventional ID card. 爱奥华州正在开发一款应用，让用户可以在智能手机上展示自己的驾照，取代做为身份证件的常规驾照。好的，今天我们学习的词是 conventional, conventional, conventional...