1.
a feeling of spontaneous good spirits.
一种自然产生的好心情。
2.
existing in or produced by nature.
存在于或由自然产生的。
3.
the quality of being spontaneous and coming from natural feelings without constraint.
自然产生，行为源于没有约束的自然情感。
4.
happening or arising without apparent external cause.
自然产生的不是由显然的外力诱发或产生的。
5.
Comparison of Induced and Natural Spawning in Southern Flounder Paralichthys lethostigma
漠斑牙鲆人工催产和自然产卵的比较
6.
The difference of psychosocial factors between women of vaginal section and cesarean section
剖宫产与自然产产妇的心理社会因素的差异
7.
Nature,Culture,and Natural Heritage:Toward a Culture of Nature
自然、文化和自然遗产:走向自然之文化
8.
Spontaneous abortion at earlier stages of pregnancy is called miscarriage.
流产可自然发生,称自然流产。
9.
How "Natural" is the Monopoly of Natural Monopolies?;
自然垄断产业垄断的“自然性”探析
10.
contrived by art rather than nature.
人工生产而非自然的。
11.
not produced by natural forces.
不是自然力量产生的。
12.
It is the inevitable outcome that complies with new natural view to reappraise natural value.
重估自然价值是顺应新的自然图景的必然产物。
13.
INHERENT MONOPOLY PROPERTY OF GAS INDUSTRY;
天然气产业中下游领域的自然垄断性
14.
Generation and Development of Naturalism in Japan as a Necessity;
自然主义在日本产生与发展的必然性
15.
Water is a product of nature. It has the most nature features of everything.
水是大自然的产物，是万物之中最具自然特征的。
16.
On Natural Monopoly and Natural Monopoly Regulation;
论自然垄断与自然垄断产业的政府规制
17.
The Relationship Between the Developments of Natural Science and Productivity as Viewed from the Development of History;
从自然科学的发展看自然科学与生产力的关系
18.
The natural rights of life, liberty, and property were uncertain.
生命，自由和财产的自然权利没有保障。