When copper exceeds the cellular needs , it is toxic through the production of highly reactive hydroxyl radicals , that have deleterious effects on cellular components including destabilization of plasma membranes and lysosomal membranes 但是也具有毒性，铜可以与一些脂质，蛋白质和核酸等物质高亲和性地结合，并催化其氧化，所以维持铜浓度在一定的正常范围很重要。
A patent held by veterinary physiologist ralph brinster of the university of pennsylvania describes how a man with a " deleterious genetic trait " would first have a testicular biopsy to remove some of the primitive cells that develop into sperm 宾夕法尼亚大学兽医生理学家拉尔夫?布林斯特拥有的一项专利是，首先对携带“有害基因序列”的男子进行睾丸活组织检查，取出一些会生长成精子的原始细胞。
Though wall street managed a gain monday despite aig ' s report suggesting possible credit - related losses , many analysts believe there is still bad news yet to come in the credit markets that could have more deleterious effects on the stock market and the broader economy 虽然在美国国际集团爆出次贷相关损失后，华尔街今日收阳，但是很多分析人士认为还有很多的有关信用市场上的坏消息还没有出来。
Inflammation is best considered not as a single process but as a collection of distinct processes , each of which may have evolved for defense against injury , but each of which has also potentially deleterious effects 关于炎症过程正确的观点应该是：不应该仅仅将其视为单一反应过程，而且应该视为多阶段的复合过程，在此过程的每一阶段，炎症反应不但具有抗损伤作用，而且同时可能具有潜在危害的影响。
Scfa can enhance colon epithelial cell proliferation , may prevent gut atrophy associated with parenteral and low residue enteral feedings , and may also support the gut barrier function against the deleterious sequence of bacterial adhesion , colonization and translocation 短链脂肪酸可促进结肠上皮细胞的增殖，防止肠外营养和低渣肠内营养引起的肠道粘膜萎缩，支持肠粘膜屏障功能，防止肠道细菌粘附、过度增殖和易位引起的损害。
Here again the scientist can sit on his lofty perch and disclaim any responsibility for what musicians do with his ideas ; but the fact remains that his impact on the musician is deep and profound and has had no less deleterious effects on music than on other areas of existence 这里,再次,科学家可以高高在上,否认要对音乐家对(照)他的理念所作的事负责;但事实上,他对音乐家的影响深远;他对音乐的毒害效应,比对其他领域的,更大
With the development of the application of internet , corporations , goverments and universities all have build their own websites and provided some services such as e - business , e - government , remote education and so on . but there is so much deleterious information on the internet 随着internet应用的日益普及，企业、政府、学校等机构纷纷上网，陆续推出电子商务、电子政府、远程教育等网络服务，极大地丰富和方便了人们的生产生活。
Sender s signature on the front is the pledge that the item does not contain any dangerous article including explosives , flammable , corrosive , oxidizing , toxic , noxious or deleterious , or otherwise harmful substances , etc . , prohibited by international postal regulations 寄件人在正面签署是保证所投寄的邮件并无装载任何国际邮政规例所禁寄的危险物品，包括爆炸性物品、易燃物品、腐蚀物品、氧化物品、有毒物品、有害物品或其他危害物品等。
