There has been a leak in the defence system.
防御系统出现了漏洞。
A strong defence system offers protection from sudden attack by the enemy.
坚固的防御系统提供保护以防备敌人的突袭。
The complementary system plays an important role in the host defence system.
补体系统在宿主免疫中具有重要的作用。
The second part concerns the coastal defence system and city of construction.
第二部分，海防卫所制度与城池建设分析。
Normally the body USES its defence or immune system together with inflammation to control infection.
人体正常地用它的防御或免疫系统和炎症一起控制感染。
Password is the first line of defence of network system.
口令是网络系统的第一道防线。
The immune system is our main defence against disease.
人体的免疫系统是抵御疾病的主要屏障。
The immune system is our main defence against disease.
人体的免疫系统是抵御疾病的主要屏障。
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