日不移晷[rì bù yí guǐ]
词典for a very short time：日不移晷。
词典日不移晷
词典in less than no time：马上；日不移晷。
词典on the spur of the moment：凭一时冲动；日不移晷。
for a very short time; in less than no time; on the spur of the moment