.商用縮寫(business acronyms)e.g. = exempli gratia（拉丁文）for example 例如，舉例 He can speak many languages (e.g. Mandarin, English, French, and Spanish). e.g.是for example的意思，當你想要舉例說明時就可以使用e.g.，從大量的例子中挑出幾個來說明i.e. = id est（拉丁文）that is/in other word 那就是說，換句話說 He can speak 3 languages, i.e., Mandarin, English and French.i.e.則是in other word，等同於換句話說，是指出相對應的實例，用來解釋、重新陳述前面所說的觀點。etc. = et cetera（拉丁文）and so on 等等 She knows how to play the piano, guitar, flute
