查询词典 add difficulty to difficulty -- extremely arduous

courteous respectful：有礼貌的、谦恭的;恭敬的

5 concise short and clear 简明的 | 6 courteous respectful 有礼貌的、谦恭的;恭敬的 | 7 invaluable extremely useful 无法估计的,十分宝贵的

death toll climbed in Mexico：死亡总数上升

kills scores in mexico 致死多人 | death toll climbed in Mexico死亡总数上升 | enter an extremely dangerous phase 进入极其危险阶段

extremely devious：极其狡猾

exhaustive (99 no-fluff pages, 2 full length videos), and无遗( 99无短绒页, 2全长录影... | extremely devious.极其狡猾. | These are very simply the methods that Black Maskers use to这些都是很简单的方法黑色...

docilely submit to sb's abuse：俯首受辱

俯拾即是--can be found everywhere; be extremely common | 俯首受辱--docilely submit to sb's abuse | 俯仰之间--in the twinkling of an eye; in an instant; in a flash

dos and don'ts=the rules：(行为准则,须知,注意事项)

black and white=something which is extremely clear(黑白分明的;绝对的) | dos and don'ts=the rules (行为准则,须知,注意事项) | haves and have nots=people who are rich and those who are not (富人和穷人...

EH：abbr. extremely high; 超高压

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Elf：abbr. extremely low frequency; 极低频

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elfin face：丑陋面容

ELF, extremely low frequency 極低周波 | elfin face 丑陋面容 | elfin face syndrome 小妖精面容综合征

extremely emaciated, skinny：皮包骨

真皮 true skin; | 皮包骨 extremely emaciated, skinny; | 雞皮鶴髮 old, haggard look;

ENIAC, Electronic Numerical Integrator and Calculator：中国电子数字微积分机

E L F, extremely low frequency 中国极低频率 | ENIAC, Electronic Numerical Integrator and Calculator 中国电子数字微积分机 | ESC, escape中国换码

complex field：复合场;复数域

复介电常数 complex dielectric constant | 复合场;复数域 complex field | 复合物生成滴定 complex formation titration

continuous attenuator：连续减光板

07.104 接收二极管reception diode | 07.105 连续减光板continuous attenuator | 07.106 滤光片filter