sunny英语单词是什么意思呢？

智通达

sunny的意思是阳光灿烂的；明快的；其乐融融的；性情开朗亲切的，
  它的比较级是sunnier，最高级是sunniest。
  Mr Obamas plan to curb carbon dioxide (CO2) emissions (排放), though necessary, will be far from cost-free, whatever his sunny speeches on the subject might suggest.