Suken(数検 or 実用数学技能検定,Jitsuyō Sūgaku Ginō Kentei, lit. Global Mathematics Certification) is a world mathematics certification program and examination established in Japan in 1988.
英汉双解词典包含3607232条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。