to one's cost

phr

• ① 使某人负担费用、遭受损失或不便
  • I have learned it to my cost.我曾吃过亏,所以知道这回事。
  • He discovered the secret to his cost.他发现了那个秘密使自己吃了亏。

• ② 由痛苦的经验
  • I know to my cost that one should never touch a wasp.我由痛苦的经验得知,一个人绝不可以去碰黄蜂。