这么多年来，头一回有人要我出示身份证。For the first time in many years, I got carded.用电子扫描器来检验身份证。The identity cards are examined by an electronic scanner.我们外出时应随身携带身份证.We should have identification card on the person when we go out....
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...
The switchover determined the marketable roomage and developmental orientation in Jiujiang.这种角色换位决定了九江的市场空间和发展方向.These are marketable skills and will allow these women to be professional therapists in their own right.这些技...