power of attorney

例句：

1. 1. He signed the power of attorney for his son's care while he was away on business.
   他在出差期间为他的儿子签署了一份授权书。
2. 2. The power of attorney is a legal document that allows someone else to act on behalf of another person.
   授权书是一种法律文件，允许他人代表另一人行事。
3. 3. The power of attorney is an important tool for managing finances when someone is unable to do so themselves.
   当某人无法亲自管理财务时，授权书是一项重要的工具。