煤炭企业在追求经济效益的同时必须履行社会责任。
The text is a tissue of quotations drawn from the innumerable centres of culture.
我从来没有见过这样阴郁而又光明的日子。
伟大家具的精髓在于它能讲述一个故事。
Collaboration often leads to breakthroughs that individual effort cannot achieve.
The rule of recognition is the ultimate rule of a legal system.