Through over 2 years research and practice, we resolve this difficult problem at last.
我公司经过两年的生产实践，完全解决了这个问题。
How to successfully resolve this difficult problem has become the focus attention of all parties.
如何成功破解这一难题已经成为各方关注的焦点。
How to successfully resolve this difficult problem has become the focus attention of all parties.
如何成功破解这一难题已经成为各方关注的焦点。
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