de facto 實際上

de facto
繁：實際上
简：实际上

目前，這些美軍士兵在台灣的任務，一個是保護美國在台協會AIT在台北的辦事處，實際上相當於美國大使館；另一個，就是訓練台灣的軍隊。

【拍案驚奇】張高麗帶頭反習 歷史決議改547處（2021年11月26日）。大紀元，取自 https://www.epochtimes.com/b5/21/11/25/n13397949.htm

The bipartisan group of lawmakers from the U.S. House of Representatives arrived in Taiwan on Thursday night and planned to meet with senior leaders including Tsai, said the American Institute in Taiwan, the de facto U.S. embassy. No further details were provided about their itinerary.

U.S lawmakers in surprise visit to Taiwan. (2021, Nov 26). The Standard. Retrieved from https://www.thestandard.com.hk/breaking-news/section/3/183570/U.S-lawmakers-in-surprise-visit-to-Taiwan