祝你走运并取得良好的DX ！
It is in the DX community, Room 306, No.2 building.
在DX小区2幢306房。
It is not easy to make dx based on photos for this case.
赵老师的意见：（译）仅根据图片不易对此例进行确切诊断。
On the math it is a line integral of something dx plus something dy.
从数学意义上来说，这是dx部分加上dy部分的线积分。
Finally, advices are given about service quality management of DX training center.
最后对完善DX培训中心的服务质量管理提出建议。
Finally, advices are given about service quality management of DX training center.
最后对完善DX培训中心的服务质量管理提出建议。
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