The fresh air in the mountains makes me feel energetic.（山里的新鲜空气让我感到精力充沛。）

Open the window to let some fresh air in.（打开窗户让新鲜空气进来。）

Birds fly through the air with ease.（鸟儿轻松地在空中飞翔。）

The air was filled with the sweet smell of flowers.（空气中弥漫着花朵的芬芳。）

We need to purify the polluted air.（我们需要净化被污染的空气。）

The hot air balloon slowly rose into the air.（热气球缓缓升上天空。）

There's a strange smell in the air.（空气中有一股奇怪的气味。）

The plane cut through the air at high speed.（飞机高速穿过空气。）

She took a deep breath of the cool air.（她深吸了一口凉爽的空气。）

The air conditioner keeps the room at a comfortable temperature.（空调使房间保持在舒适的温度。）

The athlete ran so fast that the air whistled past his ears.（运动员跑得飞快，风在他耳边呼啸。）

The air in the morning is always so refreshing.（早晨的空气总是那么清新。）

The artist used light and shadow to create a sense of air in the painting.（艺术家利用光影在画中营造出一种空间感。）

The air pressure affects the weather conditions.（气压影响天气状况。）

The children love to play with bubbles floating in the air.（孩子们喜欢玩飘在空中的泡泡。）

The air quality has improved significantly in recent years.（近年来空气质量有了显著改善。）

The old man sat outside, enjoying the warm air of the afternoon.（老人坐在外面，享受着午后温暖的空气。）

The pilot carefully monitored the air instruments during the flight.（飞行员在飞行过程中仔细监测航空仪器。）

The air around the waterfall is always misty.（瀑布周围的空气总是雾蒙蒙的。）

The wind blew the leaves through the air.（风把树叶吹得在空中飘舞。）