牛津的解释:
in future (BrE) (AmE in the future) from now on:今后、从今以后之意 (此处in future为英国英语, in the future为美国英语.
例:1)Please be more careful in future. 今后小心
点.
2) In future, make sure the door is never left unlocked.今后一定要注意把门锁上.
in the future:the time that will come after the present or the events that will happen then:在将来、未来
例:No one can foresee what will happen in the future.没人能预见将来会发生什么事.