trade/treɪd/
n.1. 买卖；交易；贸易Trade with other countries is important.与其他国家进行贸易很重要。
2. 行业the clothes trade服装行业
3. 同行者；同业者4. 职业；行当；手艺He is learning the carpenter's trade.他在学木匠手艺。
She's a dressmaker by trade.她是女服裁缝。
5. 贸易额；交易量a good trade in flowers卖花的生意很好