thin air片语KK [θɪn ɛr] /θɪn ɛɹ/发音片语1凭空、无中生有、无端多用于 out of thin airShe couldn't just pull the money out of thin air.她不可能凭空拿出这笔钱。2无影无踪、消失得无踪多用于 into thin airThe suspect seemed to vanish into thin air that night.那名嫌犯当晚仿佛消失得无影无踪。3稀薄的空气Climbers struggle to breathe in the thin air near the summit.登山者在接近峰顶的稀薄空气中呼吸困难。用这个字练口说→