【中文版】

在期货市场中，买跌是指投资者预期未来期货价格将下跌，从而买入期货合约的操作。这种操作在期货交易中很常见，因为期货市场允许投资者通过购买空头仓位来对冲风险。

当投资者认为未来市场行情将下跌时，他们可以选择购买空头仓位，也就是卖出期货合约。如果市场行情如期下跌，投资者就可以获得盈利。例如，如果一个投资者在1000元的价格上购买了某种商品的空头仓位，当该商品的价格跌到900元时，投资者就可以卖出期货合约，从而获得100元的盈利。

买跌操作的风险相对较小，因为投资者只需要支付一定的保证金就可以买入空头仓位。但如果市场行情上涨而非下跌，投资者将面临巨大的亏损。因此，在进行买跌操作之前，投资者需要对市场行情进行深入的分析和研究，以便做出正确的决策。

总之，买跌是期货交易中一种常见的操作，指的是投资者购买空头仓位来对冲风险的操作。这种操作的风险和收益并存，需要投资者根据自身情况谨慎选择。

【英文版】

In the futures market, buying bearish refers to investors' expectations that future futures prices will fall, thereby buying futures contracts. This kind of operation is common in futures trading because the futures market allows investors to hedge risks by purchasing short positions.

When investors believe that the market will fall in the future, they can choose to buy bearish positions, which is to sell futures contracts. If the market falls as expected, investors can make profits. For example, if a investor buys a short position for a commodity at a price of 1000 yuan and when the price of the commodity falls to 900 yuan, the investor can sell the futures contract and make a profit of 100 yuan.

The risk of buying bearish is relatively small because investors only need to pay a certain amount of margin to buy short positions. However, if the market rises instead of falling, investors will face huge losses. Therefore, before conducting bearish trading, investors need to conduct in-depth analysis and research on market conditions to make correct decisions.

In summary, buying bearish is a common operation in futures trading, which refers to investors buying short positions to hedge risks. This kind of operation has both risks and returns, so investors need to choose carefully based on their own situation.