The complete skin is the first defensive line of the natural defensive system of human body.

完整的皮肤是人体自然防御体系的第一道防线。

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The defensive system of fortress is a typical defensive system of "living with defending" of our country in ancient times.

堡寨聚落防御体系是我国古代一种典型的“住防合一”的聚落防御体系。

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Moreover , chitosan rapidly stimulates plant defense responses , then startups defensive system and elevates resistance to disease .

并能迅速激发植物的防卫反应， 启动植物的防御系统， 有效地提高植物的抗病性。

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In stark contrast, the Conservatives support NMD and advocate its development as a pan-Nato defensive system.

BBC: National Missile Defence

Cost and Capability: Cost concerns alone should dictate rejection of a completely ground-based defensive system in favor of one that uses both ground and space elements.

CENTERFORSECURITYPOLICY: Center For Security Policy

But Clinton wanted to negotiate a deal with Moscow that through minimal amendments to the ABM treaty would allow a minimal defensive system to protect against a minimal threat.

CENTERFORSECURITYPOLICY: Newsweek declares the missile defense debate Over��