a very short period of time 顷刻；瞬间 Word Originlate 19th cent.: abbreviation of moment.
Idioms
(the) big mo
- (especially North American English, informal)
the ability to keep moving ahead of your competitors, especially in politics In politics, momentum is known as the big mo. 在政治上，势头被称为大势头。 He's picking up a lot of support and has the big mo. 他得到了很多支持，并且很有动力。