('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.
(..) - My lord, we will not - Nay, but swear it - In faith, my lord, not I - Nor I my lord, in faith Swear Then we'll shift our ground, come hither, gentlemen Upon my hand, never to speak of this that you have heard Swear Well said, old mole, (..)2015 Hamlet