1) Richens was 17 when he flew into a rage and stabbed another teenager.

2) Martial arts expert Andrew Richens, 23, was just 17 when he flew into a rage and stabbed teenager William Choi.

3) Shanghai Richen Industrial Co. , Ltd.

4) We must understand and take advantage of goals of new rural construction from three aspects about richen people, happy people and pacify people in the process of new countryside.

5) d. Newspaper as good reading materials can widen our sight and richen our knowledge.

6) For example, using many cases or material objects to richen class, and relying on operation can enhance the effect of teaching on the highest degree.

7) The porosity and permeability of coal-bearing strata have important influence to the exhaust and mining of coal bed gas , but the production of coal bed gas is precondition of its richen.