Since optical paths are reversible, the opposite arrangement is also true.因为光路是可逆的, 所以也可以反过来安装.Her class teacher made a special arrangement to discuss her progress at school once a month.她班上的老师作了特别安排，每月讨论一次她在学业上的进展情况。Cop...
The arrangement presumes that both lenders and borrowers are rational.这一协议假定借贷双方都是在神志清楚的状态下签订的。There have been calls for a new kind of security arrangement.不少人呼吁出台新的安全措施。He professed to be content with the arrangement.他对...