originally ad

基本解釋

Twitter is an ad-hoc messaging service originally intended to allow users to update their friends with what they were doing.
Twitter是一個(gè)ad-hoc(一種無線互連對(duì)等網(wǎng)絡(luò)結(jié)搆) 實(shí)時(shí)信息服務(wù)網(wǎng)站，它最初的目的是讓使用者的朋友及時(shí)地知道該使用者正在做什麼。
It was originally built in 598 AD during the Sui Dynasty, and named as Tiantai Temple at the beginning. It was built according to the design from the founder - Grand Master Zhiyi).
始建於隋天皇十八年（598年），初名天臺(tái)寺，是依據(jù)天臺(tái)宗創(chuàng)始人智者大師親手所畫的樣式所建的。
blog.sina.com.cn
Even though anti-dumping(AD for short) laws were originally intended to address predatory pricing by foreign firms, over time they became a tool of protectionism abused by many countries.
反傾銷法本來是用於防範(fàn)外國公司以掠奪性價(jià)格進(jìn)行傾銷，但卻日益成爲(wèi)貿(mào)易保護(hù)主義的工具，被許多國家濫用。

Overlooked is that the ad originally came to the world's attention via that haven of tradition media, network television--and during the Winter Olympics, among the most expensive moments on TV.
FORBES: Magazine Article
That is, the ad to be aired during the game is not the one company executives originally hoped to use.
FORBES: SodaStream Is Bubbling Up With Super Bowl Ad