We live in a globalized world. This means that every area on the planet is in contact with every other area. One way that people contact each other is through trade. Trade is the buying and selling of goods and services. Trade between different countries is called international trade. Many companies try to sell their goods all around the world. When they send their goods to another country, they are exporting them. Many companies buy resources and other products from other countries as well. When they bring in goods from another country, they are importing them. Most countries try to export more than they import. Many times, when goods are imported, the buyer must pay a tariff. A tariff is a tax that a government collects on imported goods. Trade that has no taxes or government interference is called free trade. Many of the world's countries have free market economies. In a free market economy, people decide what to produce and what to buy. However, in some countries, the government controls what is bought and sold.
我們居住在全球化的世界，這表示地球上的每個區域都能彼此聯繫。人們互相聯繫的一種方式是透過貿易，而貿易就是商品和服務的買賣。 不同國家之間的貿易稱為國際貿易。許多企業會試著將商品銷售到世界各地，當它們把商品運送到別的國家，就是在「出口」這些商品；許多企業也會向別的國家購買原料和其他產品，當它們向外國購買商品，就是在「進口」這些商品。而多數國家會試著讓出口量大於進口量。 通常商品進口時，買方必須支付關稅。關稅是國家對進口貨物所徵收的稅。無須課稅或不受政府干預的貿易，則稱為自由貿易。 世界上許多國家擁有自由市場經濟，在自由市場經濟之下，要生產和購買何種產品由人民自行決定。然而，在某些國家中，買賣的產品則是由政府掌控。 | 
