1. 英英释义：a great difference and lack of understanding between two groups of people, especially in their beliefs, opinions, and way of life
2. 理解："gulf"是可数名词，本义是“海湾”，经常引申为“鸿沟、差别”。读《经济学人》时不时就可以碰到这个词。在口语和写作中用gulf来替换 gap，可以实现表达的多样性。
3. 应用：
1）翻译：一二线城市之间的贫富差距正在不断加大。
There is a growing gulf between first-tier cities and second-tier cities.
2) 造句：
a. 场景：夫妻之间日渐隔阂
b. 句子：The couple can clear see the widening gulf between them after ten years of marriage.
