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| сложности (трудности); сложный вопрос (khó khăn, rắc rối); проблема | |||
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vấn đề phức tạp : 2 phrases in 1 subject |
| General | 2 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
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