a crash course

含义

a short period of lessons that teaches a lot very quickly

短期内教授大量内容的课程.

例句

1. 1Before moving to Madrid, Tom took a crash course in Spanish.
2. 2The new lifeguards get a crash course in first aid before the pool opens for the summer.
3. 3I had two weeks before the interview, so my brother gave me a crash course in coding.
4. 4Is there a crash course that could teach me basic Italian before our trip next month?
5. 5Losing my job was a crash course in budgeting; within a month I learnt to live on half as much.

语法

可数名词短语：a crash course，复数为 crash courses。科目通常放在 in 之后。