online trading 网上交易
stock trading 股票交易
trading company 贸易公司
day trading 日内交易
trading post 贸易站
A: Are you interested in stock trading?
A：你对股票交易感兴趣吗。
B: Yes, I have been practicing it for a few months.
B：是的，我已经练习几个月了。
1) 贸易
2) 买卖
3) 交易
1. 贸易，买卖
noun
1. The activity of buying and selling goods, services, or financial instruments.
Synonym: commerce, business