Ciro Santilli 包子露宪 六四事件 法轮功rashadb提出了一个问题：Is it Mongo.Collection or Meteor.Collection?，或许与您遇到的问题类似。
Meteor.Collection was renamed
Mongo.Collection in 0.9.1. The change is currently backward compatible, however you should switch to using
Mongo.Collection for any new projects. It looks like the docs have mostly been updated except for the wording in the Data and security section.