In April the European Parliament forced the European Commission, which had been set to ratify the standard, to delay its vote pending further study.
4月份，欧洲议会对欧盟委员会施加压力，要求其暂时推迟新准则的投票，以等待更进一步的研究结果。
The study of the origin and pathogenesis in malignant fibrous histiocytoma is pending to be further improved.
关于其组织学来源及发病机制的研究还有待进一步完善。
The study of the origin and pathogenesis in malignant fibrous histiocytoma is pending to be further improved.
关于其组织学来源及发病机制的研究还有待进一步完善。
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