Definition: not determined yet; uncertain; unsure
Examples:
1. Whether my paper will get published is still up in the air.
2. Our plan to go to the party is still up in the air.
中文解释: http://www.youzienglish.com/index.php/cn/idiom_of_the_day/
1. Whether my paper will get published is still up in the air.
2. Our plan to go to the party is still up in the air.
中文解释: http://www.youzienglish.com/index.php/cn/idiom_of_the_day/