1. 词释
“Evanescent”是一个形容词，意为”短暂而逐渐消失的”或”难以捉摸的”。这个词通常用于描述一些短暂的或即将消失的事物、感觉或想法。比如，短暂的欢乐、忧伤或爱情，或者难以捉摸的幻觉或梦境等等。
2. 词源和发音
该词源自拉丁语”evanescere”，意思是”逐渐消失”。在英语中，这个单词的发音为”ɪˈvænəsənt”。
3. 使用场景
由于其含义的特殊性，”evanescent”往往用于一些比较文艺、抒情的场合，比如诗歌、小说、电影等等。这个词也常常出现在科学、医学、心理学等学科中，用于描述某些生理、心理或行为现象的短暂性。
以下是该单词的5个中英例句：
1. The evanescent beauty of the sunset made her feel both joyful and melancholy.（夕阳短暂的美丽让她感到既快乐又忧伤。）
2. The erfly’s wings were so evanescent that you could hardly see them.（蝴蝶的翅膀是如此难以捉摸，以至于你几乎看不到它们。）
3. The moment of enlightenment was evanescent, and soon he forgot everything he had learned.（顿悟的短暂时刻很快就过去了，他很快就忘记了所学的一切。）
4. The fame of that novel was evanescent, and it soon fell into obscurity.（那本小说的名声是短暂的，很快就被遗忘了。）
5. The evanescent nature of happiness means that we should enjoy every moment while it lasts.（快乐的短暂性意味着我们应该享受每一个瞬间。）
evanescent的中文翻译是短暂的、飘忽的、逐渐消失的。读音为[ˌiːvəˈnesnt]。
例句：
1. The beauty of the sunset was evanescent; it faded away quickly.
日落的美景是短暂的，很快就消失了。
2. The memory she shared with him was evanescent, like a dream.
她与他分享的记忆像梦一样短暂。
3. The evanescent mist gave the forest a mysterious appearance.
飘忽的雾气给森林增添了神秘的外观。
evanescent在中文中有”容易消散的、迅速遗忘的”的意思，还有易消灭的的意思，发音音标为[.i:vә’nesnt]，evanescent是一个英语形容词，在《英语ABC实用语法词典》中，共找到10个与evanescent相关的例句。
1.容易消散的
例句:Wheals are evanescent, edematous, plateaulike elevations of various sizes. They are usually oval or of arcuate contours, pink to red, and surrounded by a pink areola. (风团为暂时性、水肿性、隆起性皮损，似平台状，大小不一，呈圆形或表面呈弧形，粉红色至红色，周围有红晕。)
2.迅速遗忘的
例句:Centuries telescoped into one evanescent moment. History was wrong footed, caught off guard. Sloughed off like an old snakeskin. (数个世纪缩短成一个易逝的短暂时刻，历史乱了脚步，在疏忽时被乘虚而入，如旧蛇皮般脱落。)
3.易消灭的
例句:A tiny, evanescent expectation can often from pure natural environment, and a strong produced expectation but is only from the Law. (一个细小的、瞬息即逝的期望可以经常地从纯自然的环境中产生出来，而一个强烈而持久的期望，则只能来自于法律。—边沁。)
4.短暂的、易消灭的
例句:It is the ability of a PSTM to collect evanescent component that makes it possible to break through the Rayleigh diffraction limit. (翻译:光子扫描隧道显微镜对近场角谱的采集能力是其突破瑞利衍射极限的关键。)
evanescent一般作为形容词使用，如在evanescent elasticity([化] 渐消弹性; 渐消失弹性)、evanescent eruption(一过性皮疹)、evanescent field(瞬逝场)等常见短语中出现较多。
1. A tiny, evanescent expectation can often from pure natural environment, and a strong produced expectation but is only from the Law. (翻译:一个细小的、瞬息即逝的期望可以经常地从纯自然的环境中产生出来，而一个强烈而持久的期望，则只能来自于法律。—边沁。)
2. It is the ability of a PSTM to collect evanescent component that makes it possible to break through the Rayleigh diffraction limit. (翻译:光子扫描隧道显微镜对近场角谱的采集能力是其突破瑞利衍射极限的关键。)
3. In our images, these reflections appear as white, evanescent, moving features, just like plumes. (翻译:在我们的图像中，这些反射呈现出白色， 带有逐渐消失，正在移动的特征， 就像污染痕迹。)
4. The night evanescent? (翻译:黑夜是不是转瞬即逝? )
5. So evanescent and unstable are men’s works in this world! (翻译:在这个世界上，人的工作是这样的短暂和不稳定！ )
6. Moreover, the partly uncomprehended properties of the evanescent waves in the LHM slab are also disclosed. (翻译:此外，还揭露了倏逝波在左手平板透镜中部分未被理解的性质。)
7. The simulation results proved that LHM can partially restore the amplitudes of evanescent wave. (翻译:仿真结果表明，异向媒质对倏逝波的幅度具有部分恢复作用。)
8. redolent smell curious knowledge lucid sight torpid motion ephemeral touch piquant taste aromatic odoriferous evanescent meteoric transitory (翻译:芳香的好奇的表达清楚的视力有气无力的动作短暂的辛辣的气味知识接触味道)
9. Rather, it is a roiling, seething cauldron of evanescent particles. (翻译:相反，它是一个不断翻滚、剧烈沸腾的大锅，内有逐渐消失的粒子。)
10. The slender Evanescent clock was designed to compliment society’s linear understanding of the briefness as well as the permanence of time. (翻译:瞬息即逝的纤细的时钟，旨在表达对简约和永恒时间的线形理解。)
11. Such a polarization-gated excitation scheme creates an intense linearly polarized high-gradient evanescent field for electron acceleration. (翻译:这种偏振门控激发机制产生强烈的线偏振光高梯度电子加速消逝场。)
12. Comparing with the traditional PML, the CPML can absorb the propagating modes, but also be highly effective at absorbing low frequency evanescent modes. (翻译:与传统PML相比，该边界条件不仅可以吸收传播模，而且还可以吸收低频凋落模。)
13. The fiber-optic biosensor, which employs biological molecules as the sensoring element, is a relatively new kind of sensor on the basis of evanescent wave principle. (翻译:光纤倏逝波生物传感器是基于光波在光纤内以全反射方式传输时产生倏逝波的原理熏以生物分子作为敏感元件进行检测的一类新兴传感器。)
