L There is no scientific proof that any ET life form has ever visited the Earth.
l还没有任何科学证据可以证明外星生命曾经访问过地球。
L Most scientists believe that if there is ET life anywhere in the Universe, it must be based on the chemistry of carbon, as life on Earth is.
l大多数科学家认为，太空中如果有外星生命，它们一定也和地球上的生物一样离不开碳化合物。
As Bass l, et al. point out, a view is a coherent set of architectural elements or constructs along with the relationships among them, as written by and read by system stakeholders.
正如BassL等人所指出的，视图是由系统参与者编写和读取的体系结构元素或构造以及它们之间关系的内聚集合。
L et my love like the chirrupy ocean.
让我的爱如欢乐的海洋。
Wang L, Huang L L, Yang H Y, et al. Developing and testing of image identification system for Bactroceraspp[J]. Plant Quarantine, 2013(5):29-35.
汪露，黄丽莉，杨慧勇，等。果实蝇属昆虫图像识别系统的开发与测试[J]。植物检疫，2013（5）：29-35。
Conclusion: Oxygen free radical is involved in arrhythmia caused by ET-l which could be antagonized by SOD-1.
结论：SOD - 1具有拮抗et - 1的致心律失常作用，表明ET - 1引起的心律失常可能与氧自由基参与有关。
Maybe the most outstanding progresses are sequence stratigraphy P. R. Vail, et al. and comprehensive, geologic interpretation l.
最显著的进步或许是维尔等的层序地层学和布朗等的综合地质解释。
The results showed that there were differences in the structure of leaves, caulicle andsecondary xylem of L. obtusifolium Sieb. et Zucc. lived in shade and sun environment.
实验结果表明：阳生环境和阴生环境水蜡树叶片、幼茎、次生木质部的结构存在差异。
Xu X D , Bian L G, Ding G A , et al . Technology and Principle of City Air Pollution Observation Field Experiment ( in Chinese ) . Beijing : China Meteorological Press , 2003
徐祥德，卞林根，丁国安等。城市大气环境观测工程技术与原理。北京：气象出版社，2003。
It was called the Ruyang Gigantic Sauropod Dinosaurian Fauna by L et al… It represents a new late Early Cretaceous to early Late Cretaceous dinosaurian fauna from China.
该动物群代表了我国早白垩世晚期至晚白垩早期的恐龙动物群，其分异程度也比以前想象的高得多。
Objective To investigate the clinical significance of endothelin-l (ET-1) and interleukin-8 change in rabbits after lens extracapsular extraction and posterior chamber intraocular lens implantation.
目的探讨血浆和房水内皮素-l（ET-1），白细胞介素-8（IL-8）在人工晶状体植入术后动态变化的临床意义。
L Yin; Wang Fan; Wang Hongyan; et al(Dept of Radiation Oncology; The First Affiliated Hospital of Anhui Medical University; Hefei 230022);
安徽医科大学第一附属医院肿瘤放疗科；
L Yin; Wang Fan; Wang Hongyan; et al(Dept of Radiation Oncology; The First Affiliated Hospital of Anhui Medical University; Hefei 230022);
安徽医科大学第一附属医院肿瘤放疗科；
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