where the air is unconfined
同义词:outdoors??/??out-of-doors??/??open
in the open air
同义词:alfresco??/??open-air(a)
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。