securities operation的用法和樣例：
例句
- Insurance institutional investors may, at their option, hire special seats from securities institutions.
保險機構投資者也可向證券經營機構租用專用席位。 - The funds of an insurance company shall not be applied to the establishment of any entity to trade bonds or securities or investment in enterprises.
保險公司的資金不得用於設立證券經營機構和向企業投資。
