concert pitch
noun
mass noun
1- Music a standard for the tuning of musical instruments, internationally agreed in 1960, in which the note A above middle C has a frequency of 440 Hz【乐】国际音高, 音乐会音高, 标准音高。
1.1
- figurative a state of readiness, efficiency, and keenness〈喻〉最佳状态：
slightly unnerved by the contretemps, I was not at concert pitch.
此不幸事件使我有点灰心, 因此我未处于最佳状态。