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单词	second-line
释义	second-line adjective sec·​ond-line ˈse-kᵊn(d)-ˈlīn  : not being the usual or preferred choice second-line drugs to treat tuberculosis compare first-line Word History First Known Use 1969, in the meaning defined above Medical Definition second-line adjective sec·​ond-line ˌsek-ᵊn(d)-ˌlīn  : being or using a drug that is not the usual or preferred choice compare first-line
随便看	guide rail guide rope guide wheel guide word guide words guideboard guidebook guidebooks guided guided missile guideless guidelessness guideline guidelines guidepost guideposts guider guiders guides guideship guideships guideway guideways guiding guiding telescope

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。