Ins and outs 全部细节
我们可以用 ins and outs 来表达一件事或某个局面所包含的所有细节、里里外外的详情。
To succeed at this job you’ll need to study the ins and outs of the financial markets.
If you want to stand for class president you’re going to have to learn the ins and outs of student politics.
表达 whys and wherefores 和 ins and outs 的意思相似。它尤其用来指某事发生的具体原因和理由。
He didn’t go into the whys and wherefores but the professor said that next week’s exam had been cancelled.
I don’t know the whys and wherefores but I think Kate and Mike have split up.