in one go; in one gulp; in one breath; suddenly; all of a sudden; all at once
chugging (a glassful of) a drink in one go
binge-watching; binge-viewing
pure straight; winning hand containing nine consecutive tiles of the same suit (i.e. 1-9) as three chows; streamlined production system
finishing in one go; completing in one sitting; (doing something) in a single breath