中文：

操盘手是指具备一定投资知识和经验的投资者或职业交易员。他们通常负责管理客户的资产，通过股票、期货、外汇等交易品种进行投资，以实现客户的投资目标。

操盘手需要具备扎实的投资理论知识和丰富的实战经验，能够分析市场趋势、判断交易机会，并掌握交易技巧。他们通常在金融市场中进行短期投资，利用市场波动获取利润。

操盘手分为自由操盘手和机构操盘手两种。自由操盘手通常是个人投资者或小型投资机构，而机构操盘手则是大型投资银行、基金公司等机构的职业交易员。

操盘手在金融市场中扮演着重要的角色，他们不仅需要具备专业的投资知识和技能，还需要具备高度敏锐的市场洞察力和决策能力。同时，操盘手还需要遵守职业道德和规范，确保交易的公正、透明和合法。

英文：

A trader is an investor or professional trader with certain investment knowledge and experience, who usually manages clients' assets and invests in stocks, futures, foreign exchange and other trading instruments to achieve their investment goals.

Traders need solid knowledge of investment theories and rich practical experience to analyze market trends, judge trading opportunities, and master trading skills. They usually invest in the financial market in the short term, using market fluctuations to obtain profits.

Traders are divided into two categories: free traders and institutional traders. Free traders are usually individual investors or small investment institutions, while institutional traders are professional traders in large investment banks, fund companies and other institutions.

Traders play an important role in the financial market. They not only need professional investment knowledge and skills, but also need highly敏锐 market insight and decision-making ability. At the same time, traders also need to comply with professional ethics and regulations to ensure fair, transparent and legal trading.