Eng

At that moment...

正好

At that moment, Coincidentally, Exactly, Just then, On the, Perfect, Perfectly, Precisely, Spot

正在

Am currently, Are currently, At that moment, Being, Currently, Directly, Exactly, In the midst, Is currently, To be, Was currently, Were currently

此時

At that moment, At this time, Now, This time

在那個當下

At that moment

(That, In the)

在那一刻

At that moment

(That moment, That occasion, That time, Moment, Occasion, Time)