trust and investment business的用法和样例：
例句
- Our company has been approved to operate in the field of securities investment.
我公司已经被特准经营证券投资业务了。 - A handler shall, within the scope of its duties, handle the external investment business according to the approval opinions of the approver.
经办人应当在职责范围内，按照审批人的批准意见办理对外投资业务。
