不时之需[bù shí zhī xū]
词典possible period of want or need：不时之需。
词典need which may arise any time in the future：不时之需。
不时之需[bù shí zhī xū]
possible period of want or need; need which may arise any time in the future:
例：以备不时之需
for emergency needs; provide against a rainy day
1. apossibleperiodofwantorneed：apospory 孢子生成不能 | apossibleperiodofwantorneed 不时之需 | apostacy 叛教