The issue is all the more complex because the scientific link between Zika and microcephaly in infants has not been proved.

这个问题正变得愈加复杂，因为兹卡病毒和婴儿患小头畸形症之间存在联系这一点，还没有得到科学证明。

youdao

I think that book will give you all the basic principles you need in calculus of one variable, more variables, elementary complex numbers, maybe solving some problems with vectors and so on, which you're going to get into.

我想那本书会给你所需的所有基本知识,包括一元和多元微积分,简单的复数运算,可以解决一些与矢量有关的问题,而这正是你们将要学的

耶鲁公开课 - 基础物理课程节选

What makes any potential tie-up all the more complex is that any stadium involved in the World Cup comes under the control of the International Rugby Board.

BBC: Venues may hamper England's bid

The club's attempt at redeveloping the ground has been a long-running saga made all the more complex due to multiple organisations being involved in the decision-making process.

BBC: Bath look set to leave the Recreation Ground

All while the global, political and economic landscapes have become more complex.

FORBES: Connecting marketers to the Forbes audience. What is this?