“贸易战”常见的英文表达是 trade war。
例如：
The trade war between the two major economies has had a significant impact on global markets.（这两大经济体之间的贸易战对全球市场产生了重大影响。）
Many countries are concerned about the escalating trade war.（许多国家都对不断升级的贸易战感到担忧。 ）