By studying bacteria that flourish in the oxygen-free water, scientists hope, among other things, to learn how simple life-forms can lead to more complex ones.
通过研究这些生活在无氧环境下细菌，科研人员希望了解这些简单的生物是如何进化成更为复杂的生物的。
2
This will lead to the creation of the largest, most complex identity database in the world.
这将生成世界上最大最复杂的身份数据库。
3
The flexible syntax of the web service policy framework can lead to potentially complex policies.