These mechanisms can provide dual fine grain protection and enhance the system scalability and security.
本系统能提供细粒度的安全保护，提高了系统的可扩展性和安全性。
Early 1990s witnessed the initial grain protection price higher than the market price and the former's gradual returning to level with the purchasing price.
90年代初，我国的粮食保护价水平高于市场价，以后逐步向定购价回归。
The increased productivity from farmland made some countries self-sufficient in grain and livestock, and offered effective protection against famine.
农田生产力的提高使一些国家在粮食和牲畜方面能自给自足，并为防止饥荒提供了有效的保护。
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