例如，我们使用以下架构来定义评论树；{"_id":ObjectId("id_here"),"parentComment":"Thisismyopinion","isHidden":false,"comments":[{"comment":"Idisagreewithyouropinion","isHidden":false},{"comment":"TestPost","isHidden":false},....}因此，如果我们要更新父评论以将禁用短语的isHidden标志设置为true，我们会这样做；varuserComments=require('mongoose').model(