柯林斯词典off day (also off-day) (off days) 1. N-COUNT If someone has an off day, they do not perform as well as usual. 未能发挥正常水平; 状态不佳[非正式] A teacher who merely has an off day in the classroom cannot be dismissed for incompetence. 一个教师偶尔在课堂上发挥欠佳不能被看成不称职而遭免职。 返回 off day