levonorgestrel-releasing intra-uterine system
...Levonorgestrel-releasing intra-uterine system左炔诺孕酮宫内节育系统 Objective: To investigate the curative effects of the Levonorgestrel-releasing intra-uterine system (Brand name: Mirena)...
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levonorgestrel-releasing intra-uterine system
左炔诺孕酮释放子宫内系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。