水泥生产中的创新必须平衡效率与环境责任。

The hepatitis C virus was a hidden enemy, but every hidden enemy can be found with the right tools and determination.

Memory is a treacherous thing, it changes and distorts over time.

对于行善，没有别人和自己的区分，抛弃自己的不对，接受人家对的，非常快乐地吸取别人的优点来做好事。