sweltering

The sweltering heat made it difficult to sleep without air conditioning.

用法提示：sweltering 作形容词修饰 heat，形容又热又潮、难以忍受。

Even the evening breeze offered no relief from the sweltering air.

用法提示：sweltering 作定语修饰 air，表达湿热难耐。

The classroom felt sweltering until the teacher opened all the windows.

用法提示：sweltering 作形容词放在 felt 后作表语，描述闷热的状态。