We tried to grow some copper sulphate crystals with our children.我们想跟孩子们一起制作硫酸铜晶体。Adding sulphate to the solution will give a precipitate.将硫酸盐加入该溶液会产生沉淀.More ammonium sulphate solution is being recovered in the process o...
The players can advertise baked beans, but not rugby boots.球员可以给烤菜豆做广告，但不能代言橄榄球靴。It's simply unethical to promote and advertise such a dangerous product.宣传推广如此危险的产品完全是不道德的。I shall advertise for someone to go with me...
Minimal intervention allows the ecologies to adapt itself to a more natural balance condition.最小的干预能使生态系统通过自我调整达到更自然的平衡状态.In the long view, ecologies are temporary networks.长远来看, 生态群是临时性的网络.Global ecological efforts can ...
他在体察民情方面表现得相当周到和练达。He's shown considerable delicacy and tact in feeling the public mood.世事洞明皆学问, 人情练达即文章.A grasp of mundane affairs is genuine knowledge; an understanding of worldly wisdom is true learning.这些早已被他的从容...
我已从一位可靠人士那儿获悉,这家公司经营得非常糟糕.I've heard from a reliable source that company is running very badly.我获悉新董事是墨西哥人.I read that the new director is a Mexican.我获悉失事的消息感到十分震惊.I was devastated by the news of the crash....
含淀粉的细胞可能也含有无定形的蛋白质即谷蛋白--俗称面筋.The starch - containing cells may also contain amorphous protein known as gluten.无定形和结晶聚合物两者都能发生屈服并能冷拉伸.Both amorphous and crystalline polymers can yield and be cold - drawn.分子间键合减弱, 尤其在聚合物的无...