你的問題是：
In multiple threads environment,whether we should use StringBuilder class to hold string for sharing?
對不起，理解力差啊。
老撅對的。
String is not modifiable,StringBuilder is designed for modifiable.
In multiple threads environment,whether we should use StringBuilder class to hold string for sharing?
對不起，理解力差啊。
老撅對的。
String is not modifiable,StringBuilder is designed for modifiable.
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