双语例句
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We have set up a special toll - free telephone number to assist donors.
我们已申请一个特殊的免费电话号码来帮助捐赠者.
免费电话号码
We have set up a special toll - free telephone number to assist donors.
我们已申请一个特殊的免费电话号码来帮助捐赠者.