The study has important significance in the maintenance and prevention of the damage in freeway.

研究对高速公路裂缝类病害的养护、维修与预防具有重要意义。

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Objective To study the method for Peripherally inserted central catheters (PICC) maintenance and prevention of complication.

目的探讨PI CC导管的维护方法及并发症的预防。

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Article 24. Administrations in charge of the production and maintenance of motor vehicles and vessels should include prevention of their exhaust pollution in the respective sectional quality control.

第二十四条机动车船生产、维修管理部门应当将机动车船排气污染防治纳入行业质量管理。

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Biodiversity, which includes species, ecosystems, and ecological processes, is essential for the long-term maintenance of ecosystem services like photosynthesis, nutrient recycling, soil fertility, provision of fresh water, disaster prevention, and many others.

FORBES: Conservation International: Stemming the Tide of Environmental Crises, Part Five