at concert pitch

Unite14 ... ... a high pitch 摆在车上的小摊 at concert pitch 处于高效能（做好充分准备）状态 in there pitching 拼命的干 ...

名词前用at 的名词有哪些？如at... ... at the expense of 以。。为代价 at concert pitch 处于高效能的状态 at the risk of 冒险 ...

英语新词汇与常用词汇的翻译(A) ... at close range 接近地 at concert pitch 处于高效状态 at daggers drawn 势不两立 ...