记下可减免课税的开支，比如买的原料和设备。Keep track of tax-deductible expenses, such as the supplies and equipment you buy.比尔·布拉德利参议员概述了自己的减税计划，提出每个孩子可为家庭减免350美元的课税。Senator Bill Bradley outlined his own tax cut, giving families $350 in tax ...
怀尔德摔倒了，头撞在石头地上。Wilde fell and struck his head on the stone floor.他无法确定地板是木头的还是石头的。He could not tell whether the floor was wood or stone.有人把一大块石头给凿空了。Someone had hollowed out a large block of stone....
Objective To study the immunity duration of attenuated live rubella vaccine.目的了解冻干风疹减毒活疫苗的免疫持久性....round arches and attenuated columns.圆拱门和细长石柱Objective : To analyze the efficiency of delivery for CD 8 + T cell epitope b...