Obviously, the easiest way was just using the "difference-in-differences" analysis, which was popular among many areas of economics.

显而易见，最简单的办法就是使用“双重差分法”(亦译作“倍差法”)，其在经济学的很多领域得到了广泛应用。

youdao

Obviously, the easiest way was just using the "difference-in-differences" analysis, which was popular among many areas of economics.

显而易见，最简单的办法就是使用“双重差分法”(亦译作“倍差法”)，其在经济学的很多领域得到了广泛应用。

youdao