MEANING/意义
不定
EXAMPLES/列句
-
不定期航班
non-scheduled flight -
他的眼神飘忽不定。
His eyes drift from place to place.
COMBINATIONS/组合
-
说不定
perhaps,maybe -
指不定
(informal)  perhaps; maybe; can say for sure -
把持不定
do not have a fixed opinion,be not determined