1.slinecontract out When we take on a big job like building a dam, we contract out some of the work, such as road and bridge construction, to other companies. It’s cheaper to contract some work out th
1.contract out When we take on a big job like building a dam, we contract out some of the work, such as road and bridge construction, to other companies. It’s cheaper to contract some work out than to
Civil rights民权词汇这里是一些谈论civil rights（民权）问题的有用搭配。Dr.Martin Luther King Jr.struggled to attain his goals peacefully.马丁路德金博士为了和平实现目标努力奋斗。He championed the cau of poor people everywhere.他到处维护穷人的利益。He wan
