The abbreviation “i.e.” stands for id est, which is Latin for “that is.” The abbreviation “e.g.” stands for the Latin phrase exempli gratia, meaning “for example.”
In modern American English, a comma should follow both e.g. and i.e. And because they have both become so commonplace, it is unnecessary to place the abbreviations in italics, even though they are abbreviated Latin phrases.
缩写“即” 代表 id est，这是拉丁语中“就是”的意思。缩写“例如” 代表拉丁短语 exempli gratia，意思是“例如”。
在现代美式英语中，逗号应该跟在e.g. 和 i.e.之后，因为它们都变得如此普遍，所以没有必要将缩写词放在斜体中，即使它们是缩写的拉丁短语。