It is difficult to understand this kind of _______ calculation.
A、intricateA
参考译文：很难理解这种错综复杂的计算。intricate错综复杂的，纠缠不清的;varied不同的，种种的;indispensable不可缺少的，绝对必要的;equable变动甚少的，稳定的。
ltisoursincerehopethatyouwilldirectyourefforts__thepromotionofthisnewproductinyourmarket__ourmutualbenefit.
Overemphasisontranslationwillusuallymakethelearner________thefirstlanguageinthelearningofthesecondlanguage.
WeenclosedourPurchaseConfirmationNo.4848__in__duplicate^)一式两份intriplicate(一式三份)
Sincethepremiumvarieswiththescopeof____extrapremiumisforbuyer'saccount,shouldadditionalsiskecovered?()
Thisisourbestprice,____whichwehaveconcludedmanyorderswithotherbuyersinyourcity.()
