他被迫去理顺一大堆错综复杂的金融交易。

He's forced to untangle a complex web of financial dealings.

《柯林斯英汉双解大词典》

作者写道，植物的生命机理复杂且有趣，但与动物的生命机理差异非常大，以至于所谓的能证明植物有意识的证据虽然有趣，却站不住脚。

Plant biology is complex and fascinating, but it differs so greatly from that of animals that so-called evidence of plants' intelligence is inconclusive, the authors wrote.

youdao

在我们的公司里，我们构建的系统不但大，而且复杂，同步很困难。

In our company where the system we build is very large and complex, synchronization is hard.

youdao

In the immune system you could think of it as an even more complex set of outcomes that occur.

免疫系统是一个,有更多复杂结果的大集合

耶鲁公开课 - 生物医学工程探索课程节选

You begin to realize that all of these big seemingly complicated pieces of software in websites that you use, if you just hone in on little pieces of them at a time and you realize oh I can do that and oh I can do that.

你开始意识到,你所登陆的网站上这些大而复杂的软件,如果你只对其中的一小块代码进行研究,你就会发现,哦，我也可以来做这个。

哈佛公开课 - 计算机科学课程节选

But, as I mentioned briefly in the last class, the notorious difficulties attending this poem seem to have very little to do with Milton's grief over the death of Edward King, which may well not have been all that troubled or complicated.

不过，正如我上节课简要提到的,这首诗的阅读障碍和弥尔顿对爱德华金之死的,悲啜之情并无太大关系，他的哀悼也不是使这首诗艰深复杂的全部原因。

耶鲁公开课 - 弥尔顿课程节选