天空由通透的湛蓝色变成了暗灰色。

The sky was changing from translucent blue to thicker grey.

youdao

他是一名空军上尉，他那蓝色的制服在我们陆军的草绿色制服和暗灰色制服中间格外显眼。

He was an Air Force captain, and his blue uniform stood out amid our Army olive drab and cadet gray.

youdao

他是一名空军上尉，他那蓝色的制服在我们陆军的草绿色制服和暗灰色制服中间格外显眼。

He was an Air Force captain, and his blue uniform stood out amid our Army olive drab and cadet gray.

youdao