The #交易对 trading pair refers to a combination of two assets used for buying and selling in financial markets, usually denoted as A/B, indicating the purchase of asset A with asset B. For example, in the cryptocurrency market, BTC/USDT represents purchasing BTC with USDT. Trading pairs are the basis for asset exchange, and different trading pairs provide different market options and price discovery mechanisms. Investors use trading pairs for asset allocation, arbitrage, or speculative operations. The variety and number of trading pairs offered by exchanges directly impact market liquidity and trading activity.