Without prior notice or warning; not having been stated or communicated in advance.
这项新的规定是言之不预就实施的，让很多人感到措手不及。
This new regulation was implemented without prior notice, catching many people unprepared.
Era:
Modern
Frequency:
Next Idiom
Without prior notice or warning; not having been stated or communicated in advance.
Era:
Modern
Frequency: