a. 走调的, 不正常的, 不适合的, 不和谐的
在线英汉词典

off-key的短语、例句：

off-key adj, adv out of tune 走调（的）; 不和谐（的）: sing off-key 唱走了调
(fig 比喻) Some of his remarks were rather off-key, ie not fitting or suitable. 他的话有些是走了板儿了.