示例
A：Do you know anything about advertising?
B：Well, I know a thing or two.
A：您懂广告业吗？
B：嗯，我略知一二。
A：They are quarreling. What gives?
B：I know a thing or two. It seems that they have different opinions toward the project.
A：他们在吵架，发生了什么事？
B：我略知一二，好像他们对项目的事有不同的意见。