This means that entire frameworks which use the nested object name-spacing are making their library bigger and slower.
这就意味着如果一个框架使用嵌套对象命名空间，那么它的库将会庞大而且缓慢。
Sometimes you want to bind a variable to an object enclosed in a match, where you are also specifying match criteria on the nested object.
有时候你希望能够绑定一个变量到匹配中的一个对象，同时又能在嵌套的对象中指定匹配的标准。
Notice that the "contact" object includes another (nested) object named "address", which describes the details of an address.
需要注意的是，"contact"对象包括另一个（嵌套）对象 "address"，描述详细的地址。
Nested object members incur significant performance impact and should be minimized.
嵌套对象成员会造成重大性能影响，尽量少用。
Nested object members incur significant performance impact and should be minimized.
嵌套对象成员会造成重大性能影响，尽量少用。
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