您要查找的是不是：
- The forest will act as a defense against desert dust. 森林能起防御沙漠灰沙的作用。
- Many heroic men and women have died in defense of liberty. 许多英勇的男男女女为捍卫自由而牺牲。
- Electromagnetic wave travel as light wave do. 电磁波的传播就像光波的传播一样。
- A device used to modulate an electromagnetic wave. 调制器用以调制电磁波的装置
- They had a dogged defense of the city. 他们对城市进行了顽强的防守。
- They are repairing the defense works. 他们正在修防御工程。
- The accused has the right to defense. 被告人有权获得辩护。
- ARPANET started by the US Dept. of Defense for research. 美国国防部建立了阿帕网，作研究用。
- She's on attachment to the Ministry of Defense. 她现在隶属于国防部。
- The defense was overwhelmed by superior numbers. 防守被优势的兵力摧垮了。
- She spoke up in defense of her political beliefs. 她为她的政见力辩。
- He was called as a defense witness. 他被传唤作被告的证人。
- Several nations formed a defense league. 几个国家结成了防御联盟。
- He was the then secretary of Defense. 他是当时的国防部长。
- Communication of audible signals encoded in electromagnetic waves. 无线通讯以电磁波密码进行的可听信号的联络
- The defense of the accused was rather weak. 被告人的辩护软弱无力。
- Jordan is a better shooter. He has better defens. 乔丹是一个更好的射手.;他的防守更好
- A formal justification or defense. 正式辩解，正式辩护
- A leaky roof; a leaky defense system. 有漏缝的屋顶; 被泄密的防御体系
- electromagnetic defense 电磁防御
