fork in road / bifurcation / branch in road, river, mountain range etc / to branch off / to turn off / to diverge / to stray (from the path) / to change the subject / to interrupt / to stagger (times)
to open / to start / to turn on / to boil / to write out (a prescription, check, invoice etc) / to operate (a vehicle) / carat (gold) / abbr. for Kelvin, 開爾文|开尔文[Kai1 er3 wen2] / abbr. for 開本|开本[kai1 ben3], book format