【中文版】

15分钟线是一种时间周期，指的是股票、期货、外汇等交易品种在15分钟时间内的价格波动。这种时间周期通常用于短线交易，可以帮助交易者更好地把握市场波动，及时做出买卖决策。

在交易中，15分钟线可以提供以下信息：

1. 短期的市场趋势：通过观察15分钟线，交易者可以了解当前市场的短期趋势，从而做出相应的交易决策。
2. 买卖信号：15分钟线可以提供买入或卖出的信号。当价格突破某一关键点位时，就可以考虑进行买卖操作。
3. 止损止盈：利用15分钟线，交易者可以更好地控制风险，及时止损止盈。

总之，15分钟线是短线交易者常用的一种时间周期，可以帮助交易者更好地把握市场波动，提高交易的效率和收益。

【英文版】

15-minute line refers to a time cycle that represents the price fluctuations of stocks, futures, foreign exchange and other trading品种 within 15 minutes. This time cycle is commonly used for short-term trading, which can help traders better grasp market fluctuations and make buying and selling decisions in a timely manner.

In trading, the 15-minute line can provide the following information:

1. Short-term market trends: By observing the 15-minute line, traders can understand the short-term trends of the current market and make corresponding trading decisions.
2. Buying and selling signals: The 15-minute line can provide buying or selling signals. When the price breaks through a critical point, one can consider buying or selling.
3. Stop loss and take profit: By using the 15-minute line, traders can better control risks and stop losses or profits in a timely manner.

In summary, the 15-minute line is a time cycle commonly used by short-term traders to better grasp market fluctuations, improve trading efficiency and returns.