5、ecanstillcontributetothesocietywiththeirrichexperience.许多退休的老人还能用他们丰富的经验为社会作贡献。onnoaccount决不Youngpeopleshouldonnoaccountneglecttheirdailyphysicalexercises.青年人决不应疏忽每天的体育锻炼。Onnoaccountcan...绝对不能...Onnoaccountcan we ignore the value of knowledge.我们绝对不能忽略知识的价值。Ther