hydra

noun

1. 许德拉，多头蛇（砍去一个头即长出新头，后为大力神赫拉克勒斯所杀）
   a snake with several heads. As one head was cut off, another one grew. In the end it was killed by Hercules.
2. 棘手的复杂事物；难以根绝的祸患
   a thing that is very difficult to deal with, because it continues for a long time or because it has many different aspects
3. 水螅
   an extremely small water creature with a tube-shaped body and tentacles around its mouth

1. The real reason that the RSS hydra is sprouting is because of time shifting.
   RSS野草萌发的真正原因在于它的时间迁移功能。
2. In some ways, it seems like the death of Google Reader unleashed a hydra& destroy one RSS reader, and several pop up in its place: namely feedly, AOL reader and Digg reader, among others.
   从某种程度上看，谷歌（Google）Reader之死仿佛打开了一个魔盒：一款RSS阅读器倒下了，无数款RSS阅读器站起来&包括Feedly、AOLReader、DiggReader等等。
3. In the fierce battle, Cancer, Hydra's assistant, was killed by Heracles who crushed shells with a stick.
   在激烈的战斗中，许德拉有一只巨蟹助战，被赫拉克勒斯用大棒将蟹壳击碎而亡。
4. When last seen in his own film Captain America: The First Avenger ( 2011), Captain America, also known as US Army officer Steve Rogers ( Chris Evans), had just dispatched the evil Nazi offshoot Hydra, only to then be frozen in ice.
   在2011年上映的前作《美国队长》中，外号美国队长的美国军官史蒂夫罗杰斯（克里斯埃文斯饰）阻止了邪恶的纳粹党九头蛇军团，但是本人也因此被冰封。
5. If the probe finds that Nix and Hydra are mostly ice, it'll show Canup's simulation to be a smashing success.
   如果探测器发现尼克斯和许德拉上多数都是冰，那么克纳普的模拟实验真是个巨大的成功了。
6. A simulated low-speed crash between comparably sized planetoids yields a Pluto and a Charon, plus an icy debris disk that could coalesce into a Nix and a Hydra.
   两颗相似大小的行星在模拟低速碰撞中产生了冥王星和卡戎，还有可以形成尼克斯和许德拉的并碎屑。
7. The sister of Nemean was Hydra who was also a monster of a snake with nine heads.
   阿尼的妹妹许德拉是一个九头蛇妖，她的上半身和人一样，而且十分美丽；
8. This is good news and bodes well for the future of products with the Hydra chip on them.
   这是一个好消息，预示了与他们将来的九头蛇芯片产品。
9. Had I as many mouths as Hydra, such an answer would stop them all.
   即使我有一百张嘴，这样一个答覆也会把它们一起封住。
10. For instance, using an attack mode against a psionic hydra affects the creature as a whole.
    例如，对一只灵能多头蛇蜥使用心灵攻击模式将对此生物整体造成影响。
11. The Research on the Equipment Using Data Collector of Hydra Series for Testing the Environment
    关于利用Hydra系列数据采集器检测环境设备的探究
12. The teaching scheme can not only present the living materials for the observation of paramecium and hydra, but also cultivate and raise students'professional interests and synthetic abilities.
    不仅为草履虫、水螅的观察提供了活体材料，而且能培养和提高学生的专业兴趣与综合能力，达到素质教育、全面教育、人才教育的目的。
13. The two key link in many types of jellyfish are generational-type and Hydra type.
    这两个纲的许多种类都有水母型和水螅型的世代交替。
14. The gland cell in entoderm of hypostome was able to digest foods, but it had no hurt effect to other Hydra.
    垂唇内胚层腺细胞对食物有消化作用，对同类无伤害；
15. Week of hydra: double growth for Hydras and chaos hydras.
    九头蛇周：九头蛇产量加倍。
16. Likewise, a psionic hydra can only use one attack mode per round.
    同样地，一只灵能多头蛇蜥每轮也只能发动一次心灵攻击模式。
17. Detail of Herakles battling the nine-headed serpent Hydra from a depiction of his twelve labours.
    详细描绘了他的十二个劳动力的争夺，从九头的蛇水润赫拉克勒斯。
18. The hydra at the beginning, the angel at the end.
    它由七头蛇开始，以天使告终。
19. Absolute hydra, drunk with your blue flesh.
    绝对是多头蛇觊觎你的蓝肉。
20. One of two forms that coelenterates take e.g. a hydra or coral: usually sedentary and has a hollow cylindrical body usually with a ring of tentacles around the mouth.
    两种形式的腔肠动物之一，如水螅和珊瑚虫；通常不移栖，圆柱形身体，嘴周围通常有一圈触须。
21. Influence of Food Concentration and Low Cd Concentration on Hydra Population
    食物浓度及低浓度镉对水螅种群动态的影响
22. This beast is Hydra, it has terrorized my seas for far too long.
    这个怪兽就是许得拉，它威胁我的海洋已经旷日持久。
23. Watch carefully the morphological and behavioral changes of hydra through time, record in detail ensuing changes and take pictures.
    通过时间的积累、仔细观察他们的形态和行为变化，记录变化的细节并且拍摄照片。
24. A constellation in the Southern Hemisphere near Hydra and Corvus. Scorpio is a Water element, and this makes it a somewhat enigmatic sign.
    巨爵座南天球的一个星座，位于长蛇座和乌鸦座附近天蝎座：水相星座的特质使蝎子有些神秘。
25. In the same developing time, different temperature affects on sprouting numbers and dropping numbers of Hydra robusta.
    同一发育时间内，温度的不同影响水螅出芽数和脱落芽体数。
26. Such regenerative powers are seen in a few simple animals, such as Hydra, some coelenterates, and flat worms.
    这种再生能力通常可以在一些简单动物身上看到，例如水螅、一些腔肠动物或者扁体动物。
27. Full moisturizing effects: the flower petal essence's hydrophilic structure can strongly lock the moisture supplied by the hydra skin care, deliver long-lasting moist skin.
    全效补水：花瓣精华具有亲水基构造，能牢牢锁住化妆水补充的水分，另肌肤享受持久的滋润；
28. Suddenly, Hercules remembered the arrows dipped with Hydra's blood.
    那浸着许的毒血的箭一下子射进了阿尼破碎的心。
29. Special note: creatures with more than one head, such as a hydra, usually possess the psionic powers of just one creature, not many.
    特别注意：有一个以上头部的生物，比如多头蛇蜥，一般只按一个生物来获取心灵异能，而不是多个生物。

noun

1. small tubular solitary freshwater hydrozoan polyp

2. trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality
   1. we may be facing a hydra that defies any easy solution