There are many American expats working as professionals in this city.

expats 是 expatriate 的缩写形式，expatriate 由前缀 ex-（表示"向外"）和拉丁词根 patria（祖国）组成，字面意思是"离开祖国的人"。在当代英语中通常指"被外派到国外工作的专业人士"或"长期居住在国外的人"。