airstream

The warm airstream from the south brought mild weather to the coast.

用法提示：airstream 作可数名词，指一股明确的气流。

Pilots monitor the airstreams at high altitudes to save fuel.

用法提示：这里用复数 airstreams，表示多股气流，airstream 是名词。

A strong airstream pushed the clouds across the valley quickly.

用法提示：airstream 是名词，单数形式表示一股气流。