所有的钥匙用英文怎么说,是all the keys 还是all of the keys?

两串钥匙是two set of keys还是two sets of keys 两串钥匙是two set of keys还是two sets of keys,哪个对?为什么? 我的那串钥匙是旧的.My set of keys 后的be 动词时用is 还是are. 房间钥匙 THE KEYS TO THE HOUSE怎么样 英语翻译THE KEYS TO ZHE EXERCISE（翻译成汉语）第一个翻译是用TO还是 OF? 是All of the cat还是All of the cats I don't know all the keys to success,but the key to failure 这些钥匙是谁的who does these keys belong to?还是Who do these keys bel 谁有《天路历程》/《The Keys of the Kingdom》的中文简介或者是读后感? 英语翻译原文：The barcode keys indicate that ...(某信息)这儿的keys是指什么?翻译 The set of keys 后用is 或are? 穷人的英文怎么说、all of the poor加不加s