[Bootbox] How to change button name in Booxbox confirm dialog

Problem
I am using Bootbox to implement confirm dialog, the screenshot looks like:

The code snippet is as bellows:

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$scope.remove = function() { bootbox.confirm('是否確定要刪除', function(isConfirmed) { if(isConfirmed) { // .... } }); };

How can I change OK label to "確定"? And how do I change Cancel label to "取消"?

How-to
Here has sample code to fulfill this requirement:

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$scope.remove = function() { bootbox.confirm({ message:'是否確定要刪除', buttons: { confirm: { label: '確認' }, cancel: { label: '取消' } }, callback:function(isConfirmed) { if(isConfirmed) { // .... } } }); };

The confirmation dialog looks like: