美国的GAFA分别表示什么呢?

　中国互联网有三巨头百度阿里腾讯，美国有四巨头谷歌苹果脸书亚马逊。
　　GAFA is the corporations Google, Apple, Facebook, and Amazonviewed as a group, particularly one that wields significant powerand influence in modern affairs.
　　GAFA是指谷歌、苹果、脸书和亚马逊四大巨头，这四家公司势力极大，而且对现代事物有着重要影响。
英语新词:美国的GAFA分别表示什么呢?

　　The four so-called "Internet giants," also known as GAFA (Google, Apple, Facebook, Amazon),now have a total revenue equivalent to Denmark’s entire GDP at around $316 billion.
　　四大互联网巨头GAFA(谷歌、苹果、脸书、亚马逊)目前总收入已达3160亿美元，相当于丹麦的GDP总额。