词汇	hast thou not known?
释义	hast thou not known? 你不知道吗?
随便看	Choice of Source Text choice of spare parts choice of spouses choice of standards choice of strategies choice of strategy choice of straw choice of strucrural system choice of structural system choice of structure choice of subject matter choice of substitute choice of supermarkets choice of synonymous device choice of system choice of teaching material choice of technique choice of technique and the rate of profit choice of technology choice of technology and rate of profit Choice of Terms of Payment choice of textbooks choice of the aiming points choice of the end covers choice of the means Choice of theHome Water Purifier