to lose

• 遗失钱包

  lose a wallet

• 遗失钥匙

  lose one's keys

• 遗失的东西

  lost property

• 遗失声明

  lost property notice

• 找到了遗失的书

  have found a lost book

• 手稿遗失了。

  The manuscript has been lost.

• 遗失皮夹子一只，请拾得者赐还。

  I have lost a wallet. If you find it please return it.