concern
n.关切的事;担心 vt.有关于;使担心
This study concerns couples’ expectations of marriage.这项研究是关于夫妻对婚姻的期望。
concerning
prep.关于
calls from young children concerning lost pets小孩子打来的有关宠物走失的电话
concise
a.简明的，简要的
Your summary should be as clear and concise as possible.你的总结应该尽可能地简洁明了。
concrete
a.实在的，具体的 n.混凝土
a concrete floor混凝土地面
conclude
vt.推断出;结束;缔结 vi.结束，终了
The report concluded that the school should be closed immediately.报告的结论是这所学校应该立刻关闭。
