同种外汇因条件不同而形成的价格差别，如地区汇差、黑价与平价汇差等。也指不同外汇率之间的价格差别。仿“价差”而成difference in exchange rates

• 不法分子在国内非法买卖外汇，从中赚取汇差。

  Lawbreakers trade in foreign currencies, making money from differences in exchange rates.