问题一:这是一串钥匙 和 那是一串钥匙 用英语怎么说? this is a bunch of keys that is a bunch of keys 问题二:[紧急求助]一串钥匙用英语怎么说? 一串钥匙(以下三种表达方式都可以) 1. a set of keys 2.a sum of keys 3.a chain of keys 问题三:这是一串钥匙 和 那是一串钥匙 用英语怎么说? this is a bunch of keys that is a bunch of keys 问题四:“我有一串钥匙”用英语怎么说? I have a string of keys . 问题五:[紧急求助]一串钥匙用英语怎么说? 一串钥匙(以下三种表达方式都可以) 1. a set of keys 2.a sum of keys 3.a chain of keys