The bread must suffice to remunerate all these labourers , and several others ; such as the carpenters and bricklayers who erected the farm - buildings ; the hedgers and ditchers who made the fences necessary for the protection of the crop ; the miners and smelters who extracted or prepared the iron of which the plough and other instruments were made 面包必须足以对所有这些劳动者和其他劳动者付酬，所谓其他劳动者是指建造农场房屋的木匠和瓦匠、为保护农作物而修建围篱和挖沟的工人、开采或冶炼制作犁及其他农具所用钢铁的矿工和冶炼工。
Madam president , on 11 september this year , the twin towers of the world trade center in new york city completely collapsed just over one hour after fires raged in them upon the crash of two aeroplanes into them . it was reported that one of the causes of their collapse was the severe weakening of the load - bearing strength of the towers steel - based load - bearing structure under extreme heat 主席，本年9月11日，纽约世界贸易中心两幢大楼遭飞机撞击后燃烧一个多小时即完全倒塌，据报原因之一是该两幢建筑物的主要承力结构材料是钢铁，而钢铁的承重能力会在高温下大幅下降。
