Farmers should be guardians of the countryside.农民应是乡村的保卫者。The police are guardians of law and order.警察是法律和秩序的护卫者.She is a satisfaction to the parents and guardians of the prentices.那个学徒的父母和监护人对她很满意....
The Chinese grand guardians the life insurance service speed - up has in the third quarter postpones.中国太保第三季度寿险业务增速有所放缓.Farmers should be guardians of the countryside.农民应是乡村的保卫者。...when the rule of law is broken by its s...
The alkylation of isoparaffin with olefin is an important process of petroleum processing.异构烷烃与低分子烯烃的烷基化反应是石油加工的重要过程之一.Recent advances in ring closing metathesis ( RCM ) reaction, including olefin and enyne metathesis re...