【中文版】

在股票交易中，量比是一个重要的技术指标，用于衡量股票交易的活跃程度。量比值是指在一个时间段内，股票交易的相对成交量，通常用于比较当天与过去几天的成交量。

量比值大于1表示当天交易量较过去几天有所放大，而量比值小于1则表示当天交易量较过去几天有所缩小。当量比值超过2时，说明当天股票交易非常活跃，可能存在市场热点或主力资金介入的情况。

量比值的变化可以反映市场情绪和趋势的变化。如果市场趋势向上，量比值通常会逐渐增加，表明投资者对市场的信心逐渐增强。而如果市场趋势向下，量比值通常会逐渐减小，表明投资者对市场的信心逐渐减弱。

量比值也可以用于预测股票价格的走势。如果量比值在股票价格上涨时增加，说明买方力量增强，股票价格有望继续上涨。而如果量比值在股票价格下跌时增加，说明卖方力量增强，股票价格可能继续下跌。

总之，量比是股票交易中的一个重要指标，可以用于衡量市场活跃程度、判断市场情绪和趋势变化以及预测股票价格的走势。投资者在进行股票交易时，应该密切关注量比值的变化。

【英文版】

In stock trading, volume ratio is an important technical indicator used to measure the activity level of stock trading. Volume ratio refers to the relative volume of stock trading in a period of time, usually used to compare the trading volume of the current day with that of the past few days.

If the volume ratio is greater than 1, it means that the trading volume on that day is higher than that of the past few days.反之, if the volume ratio is less than 1, it indicates that the trading volume on that day is lower than that of the past few days. When the volume ratio exceeds 2, it means that the stock trading on that day is very active, and there may be market hotspots or main capital介入的情况.

The change in volume ratio can reflect changes in market sentiment and trends. If the market trend is upward, the volume ratio usually gradually increases, indicating that investors' confidence in the market is gradually increasing. Conversely, if the market trend is downward, the volume ratio usually gradually decreases, indicating that investors' confidence in the market is gradually decreasing.

Volume ratio can also be used to predict the trend of stock prices. If the volume ratio increases when stock prices are rising, it means that buyer strength is increasing and stock prices are expected to continue to rise. Conversely, if the volume ratio increases when stock prices are falling, it means that seller strength is increasing and stock prices may continue to fall.

In summary, volume ratio is an important indicator in stock trading that can be used to measure market activity levels, judge changes in market sentiment and trends, and predict the trend of stock prices. Investors should pay close attention to changes in volume ratio when conducting stock trading.