tarvan

例句：

1. 1.Tariffs are a way to protect domestic industries from foreign competition.
   关税是一种保护国内产业免受外国竞争的方式。
2. 2. The tariff on imported goods has increased significantly in recent years.
   近年来，进口商品的关税大幅增加。
3. 3. Tariffs can have both positive and negative effects on trade.
   关税对贸易既有积极影响也有负面影响。