| 1 | Spring rain brings vitality and energy to the earth. | |
| 2 | Look outside the window, the sunshine is bright, and everything is full of vitality. | |
| 3 | But at least they had the phone, their one lifeline. | |
| 4 | Public health institutions have conducted numerous studies in the field of internal medicine. | |
| 5 | Researchers have conducted a deep analysis of the mechanism of this disease. |
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