$pullAll 运算符实际上是特殊情况"快捷方式，适用于仅包含值的数组，例如您的替代情况.

The $pullAll operator is actually a "special case" shortcut which works on arrays with just values in them, such as your alternate case.

您真正想要的是 $pull ，它的参数是对数组中包含的文档的查询".因此，您的列表将成为 $in 的参数:

What you really want is $pull and it's argument is a "query" for the documents contained in the array. So your list then becomes an argument to $in:

db.bios.update(
   { "name.first": "James" },
   { 
      "$pull": { 
         "awards": { "by": { "$in": ["Stockholm", "Hollywood"] } } 
      } 
   }
)

因此在您的另一个示例中，$pullAll的较长形式为:

So in your other example, a longer form of $pullAll would be:

db.bios.update(
   { "name.first": "James" },
   {
       "$pull": { "contribs": { "$in": ["Java","UNIX"] } }
   }
)

一样，只是纵向"形式.

Same thing but just the "longhand" form.