Copula net diagram is an important tool for guiding the cupola operation.网形图是指导冲天炉熔炼操作的重要工具.In ` George became ill', the verb ` became'is a copula.在Georgebecameill一句中,became是系词.Kendall is criterion of comparing...
But a concerted effort has begun to improve the quality of the urban air.但是各方已经开始共同努力改善城镇空气质量。Another goal is to help manufacturers of antivenom medicines improve their products.另一方面,还致力于帮助那些抗蛇毒血清的生产厂家改善其产品(质量).Objective...