蓝天：指天空中没有云彩，阳光明媚的蓝色天空。
Blue Air Transport Aerian S.A.
... atmospheric air大气 blue air沮丧,忧虑的神情 chilly air寒冷的空气 ...
The trees were standing straight pointing upright to the sky. White louds floated in the blue air.
树木直挺指向天空，而白云在蓝天上漂浮。
Suddenly the lights came on up the whole length of Fifth Avenue, chains of misty brilliance in the blue air.
突然间，整个第五大道的街灯都点亮了，在萧索的空气里晕开雾朦朦的光芒。
The blue air of spring, fresh from its memories of windy pools and lush shrubbery, could thrill him with eagerness.
春天蔚蓝的天空下，风掠过的池塘和繁茂的花木，在记忆中仍然历历在目，激起了他许多的感慨。
And, sure enough, something was glittering, up there in the sky, something was shimmering, in the blue air of summer we saw it clearly, whatever it was.
There is even provision for canceling Blue Angels air shows at Lynchburg and Virginia Beach.
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However, in 1956 it was resurrected as a two-day service called Blue Label Air and continues to this day, along with a host of other time-sensitive options.