When we get a cold, we can see and feel our body's defence systems activating.
当我们患了感冒，我们可以观察和感觉到身体里的防卫系统开始运作。
Medical technology: Researchers are devising laser-defence systems to shoot down mosquitoes.
医学科技：研究人员正在设计激光防卫系统用于击落蚊子。
Analysts question whether it is as stealthy as claimed and its ability to penetrate the best future air-defence systems.
分析家们怀疑其隐身能力是否有声称的那么好、有没有能力穿透未来最好的防空系统。
[color=#000000]Medical technology: Researchers are devising laser-defence systems to shoot down mosquitoes and prevent the spread of malaria.
医学技术：研究者正在设计激光防御系统，用来歼灭蚊子，防止疟疾扩散。
He didn't realise at the time that SAGE formed an important part of America's air defence systems during the Cold War but it still made an impression.
他那个时候并不知道，半自动地面防空警备系统是冷战时期美国空中防御系统的重要组成部分，但它依然给他留下了深刻的印象。
All mental defence systems are such limiting beliefs, and who among us does not have some of these?
所有的心智防御系统都是些有局限性的信念。有谁又能完全超乎这些局限性呢？
Medical technology: Researchers are devising laser-defence systems to shoot down mosquitoes and prevent the spread of malaria. No, really.
医学技术：研究者正在设计激光防御系统，用来歼灭蚊子，防止疟疾扩散。不会吧，这是真的吗？
The Human Immunodeficiency Virus (HIV) targets the immune system and weakens people's surveillance and defence systems against infections and some types of cancer.
人类免疫缺陷病毒(艾滋病毒)感染免疫系统，削弱人体对感染以及一些癌症的监视和防御系统。
Multiple anti seismic lines of defence systems having strong column, middle beam and weak brace will be formed by selecting rational reinforced concrete brace sections.
选择合理的钢筋混凝土支撑截面可以形成“强柱、中梁、弱支撑”的多道抗震防线体系。
Multiple anti seismic lines of defence systems having strong column, middle beam and weak brace will be formed by selecting rational reinforced concrete brace sections.
选择合理的钢筋混凝土支撑截面可以形成“强柱、中梁、弱支撑”的多道抗震防线体系。
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