明知故问

明的英语翻译：

bright; clear; clear-sighted; honest; immediately following in time
understand
【医】 phanero-

知的英语翻译：

be aware of; be in charge of; inform; know; notify; realize

故的英语翻译：

reason; cause; hence; therefore; die; former; old; friend; happening
on purpose

问的英语翻译：

ask