他把手伸进胸前口袋里拿雪茄烟盒。He reached into his breast pocket for his cigar case.她一动不动地站着，低着头，双手紧扣在胸前。She stood still, head bowed, hands clasped in front of her.米尔双臂交叉在胸前，把头转到一边。Meer folded his arms over his chest and turned his hea...
They set up purifying systems in places where the water was not potable.他们在许多水质不适合饮用的地方建立了净化系统。Changing iron into steel is a process of purifying the iron.把铁炼成钢是铁的精炼过程.The extra step would increase the margin of safety b...