n. the commercial exchange (buying and selling on domestic or international markets) of goods and services
n. the skilled practice of a practical occupation
n. the business given to a commercial establishment by its customers
v. engage in the trade of
n. 贸易, 商业, 交易, 生意, 职业, 顾客, 信风
vi. 进行交易, 做买卖, 经商, 对换, 购物
vt. 用...进行交换
1. We need to trade our old books for new ones.
我们需要把旧书交换成新书。
2. Many countries rely on trade to boost their economies.
许多国家依靠贸易来促进经济发展。
3. He decided to trade his bike for a skateboard.
他决定用自行车换一个滑板。