1.
naturally occurring isotope
自然界存在的同位素
2.
There was in nature another element which sent out radioactivity.
在自然界里存在着另一种具有放射性的元素。
3.
as found in nature in the elemental form.
以元素形态存在于自然界中。
4.
Seventy of the 350 naturally occurring isotopes are radioactive.
自然界有350种天然同位素，其中70种有放射性。
5.
Is there necessity in nature?
自然界是否存在必然性?
6.
a radioactive isotope of an element; produced either naturally or artificially.
天然存在或人工合成的某种元素的放射性同位素。
7.
There's natural sympathy, natural antipathy.
存在着自然而然的同情，自然而然的反感。
8.
Man is the sole living moral creature.
在自然界中，只有人是有道德的存在物。
9.
existing in or in conformity with nature or the observable world.
存在于或与自然或客观世界一致的。
10.
Philosophy of subjectivity immensely exaggerated human subjective status in nature, so that generated natural crisis and human existence crisis.
主体性哲学无限夸大了人在自然界面前的主体地位,造成了自然危机和人类生存危机。
11.
On the Different Aesthetic Senses of the NatureBeauty and Science Beauty in Nature;
自然美和科学美在自然界的不同审美表现
12.
They are struggling against the forces of nature.
他们在同自然界作斗争。
13.
Lutein and zeaxanthin are both dihydroxy-carotenoids with the ionone ring systems distributed widely in nature.
叶黄素和玉米黄质是含紫罗酮环的二羟基类胡萝卜素,在自然界广泛存在。
14.
The heaviest naturally occurring element is uranium, which has92 protons.
自然存在的最重元素是铀，有92个质子。
15.
Both types of organisms are ubiquitous in nature.
在自然界中普遍存在两种类型的生物体。
16.
One of the isomeric forms of carotene that is widely distributed in nature.
β－胡萝卜素胡萝卜素的异构体之一，广泛存于自然界中
17.
Lattice structure is ubiquitous in nature.
格形结构是自然界中普遍存在的一种结构形态。
18.
Madam Curie insisted (that) there was something in nature that gave out radiation.
居里夫人坚信自然界存在着能发出射线的物质。