请问a certain amount of 这个词组的准确意思

请问a certain amount of 这个词组的准确意思 there is a certain amount of truth in 请问“a fair amount”是什么意思? 翻译 A certain amount of stress is vital to provide motivation. 译If we guarantee an annual order of a certain amount,接上面would you give us a special discount? This seems mostly effectively done by supporting a certain amount of research not .This seems mostly effectively done by supporting a certain amount of research not related to immediate goals but of possible consequences in the future.中 relate to a certain In order to graduate,every student must make a certain amount of classes in history,math.求翻译 请问a certain和certain a哪个是某一的意思? 请问the amount 请问Amount paid to 请问Amount Invoiced to Except on official ____ such as formal reception,American society has a certain amount of informality.选项:a、casesb、situationsc、conditionsd、occasions 请问a certain与certain a有什么区别?“某一个”或“某人”这里应该用哪个呢？ 请问a certain与certain a有什么区别?“某一个”或“某人”这里应该用哪个呢? 英语 请问这里的certain什么意思?A few days ago I met a certain young V 英语翻译为什么没有助动词be却是被动句：this seems mostly effectively done by supporting a certain amount of research Though we have made enough preparation,we still _________ that we will meet a certain amount of resistance to our planA.promiseB.anticipateC.lookD.call这个选哪个?