心血来潮

to be prompted by a sudden impulse / carried away by a whim / to have a brainstorm

heart / mind / intention / center / core / CL:顆|颗[ke1],個|个[ge4]

heart's blood / expenditure (for some project) / meticulous care

blood / colloquial pr. [xie3] / CL:滴[di1],片[pian4]

to come / to arrive / to come round / ever since / next

(of water) to rise / rising tide / (of women) to get one's period

tide / current / damp / moist / humid

tide / damp; moist; humid / fashionable; trendy / (coll.) inferior; substandard