crash course
noun [ C ] uk/ˈkræʃ ˌkɔːs/ us/ˈkræʃ ˌkɔːrs/
速成班;短训班;速成教程
a course that teaches you a lot of basic facts in a very short time
I did/took a crash course in French before my trip to Paris. 我去巴黎前参加了一个法语速成班。
江苏热线英汉汉英双解词典包含207361条英汉翻译词条,涵盖了常用英语单词及词组短语的翻译及用法,是英语学习的必备工具。