oh!( ) it's spring in china,it's fall in australia

oh!( ) it's spring in china,it's fall in australia
oh!( ) it's spring in china,it's fall in australia

oh!( ) it's spring in china,it's fall in australia
while/when,当中国是春天时,澳大利亚是秋天

在中国是春天，在澳大利亚是秋天。(由于中国和澳大利亚分属不同半球。)

添when，你可以看五下英语书 24页 good to know

whlie/when 表示是同时的
though、although表示转折