('US') She shifted 'into' low/high 'gear'. = ('Brit') She changed 'into' bottom/top 'gear'. [=she changed to a gear that allows for a slower/faster rate of speed]
This discovery will bring about a 'paradigm shift' in our understanding of evolution. [=will cause people to understand evolution in a completely new way]
We need to 'shift ourselves' [='get moving'] if we're going to make it home before dark.
(..) Daddy, this is Miller. He's one of ours. Appreciate your help. Yes, sir. We'll be in, in a minute. Catch me up. We're working in shifts. Got two outside her motel. The others are either out searchin' or sleepin' here. I met the county sheriff, but he wasn't much help. (..)2012 Mud