every coin have two sides 每个硬币都有两面；任何事物都有两面性；有两面性；凡事皆有两面性；事情都有两面性

【例句】
Just as every coin has two sides, ABS in the financial system is also a double-edged sword.
正如每个硬币都有两面一样，资产支持证券也是金融体系中的双刃刀。

There is an old proverb in western countries, which is "every coin has two sides".
西方有句谚语：任何事物都有两面性。文化也是一把双刃剑。