proprietary trading的用法和样例：
例句
- HFT is high-volume trading used by banks' proprietary traders and a new breed of electronic trading outfits.
高频交易是银行自营交易员和新一代电子交易设备采用的大额交易。 - Securities companies shall use their own funds or funds raised in accordance with the law when operating proprietary business.
证券公司的自营业务必须使用自有资金和依法筹集的资金。
