每日商務英語 第613期:速成課

crash course -------- 速成課（非正式）

英文釋義
(INFORMAL) A short but intensive period of training, usually providing only basic information.

例句
Before traveling abroad as a tourist, I try to take a crash course in the language of the country I will be visiting.
在去國外旅行之前，我想上個速成課，學習我要去的國家的語言。