藍天的英文的縮寫為blue sky。
雙語例句:
1、他站在那裏,頭向後仰,襯托在藍天下。
He stood there, head back, framed against the blue sky.
2、白雪覆蓋的高山在藍天的映襯下格外醒目。
The snow-capped mountain stood out in sharp relief against the blue sky.