spontaneous

adj.

1. 自发的；非筹划安排的
   not planned but done because you suddenly want to do it
   1. a spontaneous offer of help
      主动提出帮助
   2. The audience burst into spontaneous applause.
      观众自发地鼓起掌来。
2. 常心血来潮的
   often doing things without planning to, because you suddenly want to do them
3. 自发的；自然的；自身造成的
   happening naturally, without being made to happen
   1. spontaneous remission of the disease
      疾病的自然缓解
4. 自然的；非勉强的；无雕饰的
   done naturally, without being forced or practised
   1. a tape recording of spontaneous speech
      一段自然讲话的磁带录音
   2. a wonderfully spontaneous performance of the piece
      对那支乐曲极其淳朴自然的演奏

1. ADJ-GRADED (行为)自然的，自发的
   Spontaneous acts are not planned or arranged, but are done because someone suddenly wants to do them.
   1. Diana's house was crowded with happy people whose spontaneous outbursts of song were accompanied by lively music...
      戴安娜的家里挤满了兴奋的人们，他们伴着欢快的音乐不由自主地引吭高歌。
   2. I joined in the spontaneous applause.
      我跟着也自然而然地鼓起掌来。
2. ADJ 自然的，自发的(指由于内部原因而非外界影响所引起的)
   A spontaneous event happens because of processes within something rather than being caused by things outside it.
   1. I had another spontaneous miscarriage at around the 16th to 18th week.
      我在大约第 16 至 18 孕周时又经历了一次自然流产。
   2. ...a spontaneous explosion.
      自爆

1. Every movement, no matter how casual and spontaneous, needs to be worked out to the last detail
   对每一个动作，无论它显得多么随意和无意识，都不能放过一丝细节。
2. Diana's house was crowded with happy people whose spontaneous outbursts of song were accompanied by lively music
   戴安娜的家里挤满了兴奋的人们，他们伴着欢快的音乐不由自主地引吭高歌。
3. I joined in the spontaneous applause.
   我跟着也自然而然地鼓起掌来。
4. I had another spontaneous miscarriage at around the 16th to 18th week.
   我在大约第16至18孕周时又经历了一次自然流产。
5. Spontaneous applause broke out as soon as she finished speaking.
   她一讲完，大家不约而同都鼓起掌来。
6. The eruption of a volcano is spontaneous.
   火山的爆发是自发的。
7. Its use in the spontaneous disease of animals is probably justified.
   把它应用于动物的自然病例很可能是有效的。
8. This theory can be used to explain the phenomenon of "human spontaneous combustion".
   这个理论可以解释上面所归纳的“人体自燃”现象。
9. This finding is consistent with "human spontaneous combustion".
   这一结果与所谓的“人体自燃”完全相同。
10. They are spontaneous in their ideas and actions.
    他们在意识和行为上是自发的。
11. Because of spontaneous mutations in germ cells sperm and eggs each generation of our species is subtly different.
    正是因为生殖细胞&精子和卵细胞中的自发突变，我们每一代人之间才会产生微妙的差异。
12. A spontaneous display of friendship and affection.
    友谊和感情的自然流露。
13. This Is our condition for spontaneous change.
    这就是自发变化的条件。
14. The interfacial reactions enhance the wettability and promote the spontaneous infiltration process.
    界面反应的存在提高了润湿性，促进了无压自发浸渗。
15. Objective To study the therapeutic method and effects of spontaneous cerebral hemorrhage broken into ventricles of brain.
    目的探讨自发性脑出血破入脑室患者的治疗方法和效果。
16. Giving and sharing are spontaneous expressions of joy.
    给予和分享是喜悦的自然表露。
17. The industrial ecosphere's construction is organic unification of the market spontaneous behavior and the government conscious activity.
    产业生态圈的构建是市场自发行为和政府自觉行为的有机统一。
18. There was spontaneous transformation in both the United States and England.
    在美国和英国都自发地发生了转变。
19. It's a passive and spontaneous experience.
    它是被动和自发经验。
20. Giving and sharing are spontaneous expressions of love.
    赠予和分享是爱的自然表露。
21. The spontaneous change lowers the potential energy in that case.
    在这个例子中，自发变化减小了势能。
22. Spontaneous photons initiate stimulated emission and the chain reaction begins.
    自发发射的光子引起受激发射，开始了链式反应。
23. Energy and optimal pressure of amplified spontaneous emission and laser oscillation are compared.
    本文还对自发辐射放大和激光振荡的能量和最佳气压进行了比较。
24. The spontaneous symmetry breaking of a mechanical system and its energy degeneracy is discussed.
    详细研究了一个力学系统的对称性自发破缺，以及由此引起的能量简并。
25. The investigation outcome is helpful to control the spontaneous combustion of coal gangue.
    该研究成果对矸石山煤矸石自燃治理具有一定的指导意义。
26. The spectral characteristics as well as the suppression of amplified spontaneous emission were discussed in detail.
    此外，对光谱特性及放大的自发发射的抑制也进行了探讨。
27. In this paper, the interaction patterns and their automatic analysis in spontaneous spoken information-seeking dialogues are studied.
    研究了信息类自然口语对话中的交互模式及其自动分析。
28. Objective To explore the clinical features and treatment options of pediatric spontaneous intracranial hemorrhage.
    目的探讨小儿自发性颅内出血的临床特点和治疗方法。
29. Teachers in Brazil, for example, are very spontaneous and open.
    例如，巴西的教师就非常有自主性和开放性。
30. Slope hazards risk evaluation on Spontaneous ignition of goaf was conducted.
    针对采空区自然发火进行了危险性评价。

adj

1. said or done without having been planned or written in advance
   1. he made a few ad-lib remarks

   Synonym:    ad-libunwritten

2. happening or arising without apparent external cause
   1. spontaneous laughter
   2. spontaneous combustion
   3. a spontaneous abortion

   Synonym:    self-generated