大多数研究人员认为，现实世界中暴力的原因是复杂的。
Most researchers agree that the causes of real-world violence are complex.
中医药的复杂性和深层的概念基础，给研究人员寻找其工作原理的证据带来了挑战。
TCM's complexity and underlying conceptual foundations present challenges for researchers seeking evidence on how it works.
借助这些组件以及它们的实现，开发人员可以构建复杂的推荐系统，提供基于实时或者离线的推荐。
These components and their implementations make it possible to build out complex recommendation systems for either real-time-based recommendations or offline recommendations.
应用推荐