交杯酒是中国传统婚礼中的一个环节，新郎和新娘分别举起酒杯交错交换，象征着两人结为夫妻，共度一生。那么，我们该如何用英语表达这个传统习俗呢？

首先，我们可以用“wine cup exchange”来描述这个环节。在介绍时，可以简单地说：“In Chinese wedding tradition, there is a moment called wine cup exchange, where the groom and bride exchange their cups to symbolize their union as a married couple.”

如果想要更加详细地描述这个环节，可以说：“During the wine cup exchange, the bride and groom each hold a cup of wine and cross arms to exchange cups. This symbolizes their commitment to each other and their willingness to share everything in their new life together.”

除了交杯酒外，中国的传统婚礼还有许多其他的仪式和习俗。如果你想要介绍更多的内容，可以说：“Chinese weddings are full of traditional rituals and customs, such as the tea ceremony, the dragon and phoenix candle ceremony, and the red envelope giving. These customs are deeply rooted in Chinese culture and reflect the importance of family and tradition in Chinese society.”

总的来说，交杯酒是中国传统婚礼中一个非常重要的环节，它象征着两人相互扶持，共同度过人生的每一个阶段。通过用英语来介绍这个传统习俗，我们可以向世界展示中国独特的文化和价值观。