barter terms of trade

例句：

1. 1. The company's main trade is in electronics.
   该公司的主要业务是电子。
2. 2. He has a keen interest in foreign trade.
   他对国际贸易有着浓厚的兴趣。
3. 3. Trade barriers are increasingly being lifted.
   贸易壁垒正在逐渐取消。