“正在”怎么读

“正在”的英语可以翻译为：in process of，in course of ...

他此刻正在南美旅游观光。He's touring South America at this moment in time.因为正在使用很多昂贵的设备，所以我非常紧张。I get very nervous because I'm using a lot of expensive equipment.我们正在成为时装业的领军者之一。We are becoming one of the market leaders in...