No big one. To me, 'at' suggests a point-- the very beginning instant-- while 'in' suggests a slight span of time. At the beginning, I didn't know which end of the snowboard was the front.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Anonymouswhat is the difference?In what context? Can you write some sentences that make it more clear what you mean?