gravity

简明释义

英[ˈɡrævəti]美[ˈɡrævəti]

n. 重力，地心引力；严重性；严肃，庄严；重（量）

复 数 g r a v i t i e s

英英释义

单词用法

同义词

反义词

例句

1.Every plant on the disk had responded to the pull of gravity, and pointed its roots to the outside.

每一株盘子上的植物都能感受到重力的作用，根部都朝外面生长。

2.With no gravity, it's just as easy to pedal.

在没有重力的情况下，踩起踏板来很容易。

3.It is to get the rocket going fast enough to escape Earth's gravity.

是为了让火箭的速度足够快，足以逃离地球的引力。

4.As the nebula collapsed caused by its gravity, it spun faster and flattened into a disk.

当星云因其重力而坍缩时，它旋转得更快，并压扁成一个盘状。

5.The rest of the concept relied on gravity, which guaranteed that the surface of the molten metal was perfectly flat and horizontal.

其余的概念依赖于重力，它保证了熔融金属的表面是完全平坦和水平。

6.Arrows would continue to fly forward forever in a straight line were it not for gravity, which brings them down to earth.

要不是重力使箭掉落地上，它将会一直沿直线往前飞行。

7.An apple four hundred years ago led to the law of gravity while the apple designed by Steve Jobs has changed our life greatly.

四百年前的一个苹果带来了万有引力定律，而史蒂夫有·乔布斯设计的苹果大大地改变了我们的生活。

8.The scientist explained the concept of gravity (引力) during the lecture.

科学家在讲座中解释了引力的概念。

9.Without gravity (引力), we would float away into space.

没有引力，我们会漂浮到太空中去。

10.The gravity (引力) on the moon is weaker than that on Earth.

月球上的引力比地球上的要弱。

11.Astronauts experience a lack of gravity (引力) while in space.

宇航员在太空中经历缺乏引力的状态。

12.The gravity (引力) of the situation made everyone feel anxious.

这个情况的引力让每个人都感到焦虑。

作文

The concept of gravity is fundamental to our understanding of the universe. In simple terms, gravity refers to the force that attracts two bodies toward each other. It is this force that keeps us grounded on Earth and governs the motion of celestial bodies in space. The phenomenon of gravity was first described by Sir Isaac Newton in the 17th century, who formulated the law of universal gravitation. According to Newton, every mass exerts an attractive force on every other mass, which means that even the smallest objects have some gravitational pull. One of the most intriguing aspects of gravity is its role in shaping the structure of the universe. Without gravity, stars, planets, and galaxies would not exist as we know them. For instance, the Sun’s gravity holds the solar system together, keeping the planets in orbit around it. Similarly, the gravity of Earth creates the conditions necessary for life, such as maintaining our atmosphere and regulating temperature. In addition to its physical implications, gravity also has philosophical and existential significance. The awareness of gravity can lead us to ponder our place in the universe. It reminds us of the forces that bind us to our planet and to one another. The weight of gravity can also be seen metaphorically; it represents the burdens and responsibilities we carry in life. Just as gravity pulls us down, our choices and obligations can weigh heavily on our minds and hearts. In modern physics, the understanding of gravity has evolved further with Einstein's theory of general relativity. Einstein proposed that gravity is not just a force but a curvature of spacetime caused by mass. This revolutionary idea changed how we perceive gravity and its effects. For example, massive objects like planets and stars bend the fabric of spacetime, creating a 'well' that smaller objects fall into, which we perceive as gravity. The implications of gravity extend beyond Earth and the solar system. Scientists study gravity to understand phenomena such as black holes, which are regions of space where gravity is so intense that nothing, not even light, can escape. The study of gravity also plays a crucial role in space exploration. When launching spacecraft, engineers must calculate the gravity of both Earth and the destination body to ensure successful missions. In conclusion, the concept of gravity is more than just a scientific principle; it is a profound aspect of our existence. From the way we live our daily lives to the vastness of the cosmos, gravity influences everything. Understanding gravity allows us to appreciate the delicate balance of forces that govern our world and inspires us to explore the mysteries of the universe further. As we continue to unravel the secrets of gravity, we may discover even more about the nature of reality and our place within it.

“重力”这一概念是我们理解宇宙的基础。简单来说，重力是指吸引两个物体彼此靠近的力量。正是这种力量使我们在地球上保持稳定，并支配着天体在太空中的运动。17世纪，艾萨克·牛顿爵士首次描述了重力现象，他制定了万有引力定律。根据牛顿的说法，每个质量都会对其他质量施加吸引力，这意味着即使是最小的物体也具有某种引力。 重力最引人入胜的方面之一是它在塑造宇宙结构中的作用。如果没有重力，星星、行星和银河系就不会像我们所知道的那样存在。例如，太阳的重力将太阳系连接在一起，使行星围绕它运转。同样，地球的重力创造了生命所需的条件，例如维持我们的气氛和调节温度。 除了物理意义，重力也具有哲学和存在意义。意识到重力可以让我们思考自己在宇宙中的位置。它提醒我们束缚我们于地球和彼此之间的力量。重力的重量也可以被比喻性地看作；它代表了我们生活中承担的负担和责任。就像重力将我们拉向下方一样，我们的选择和义务也可能重重地压在我们的心灵和思想上。 在现代物理学中，爱因斯坦的广义相对论进一步发展了我们对重力的理解。爱因斯坦提出，重力不仅仅是一种力量，而是由质量引起的时空曲率。这一革命性的想法改变了我们对重力及其影响的看法。例如，像行星和恒星这样的巨大物体弯曲时空的结构，形成一个“井”，小物体则掉入其中，这就是我们感知到的重力。 重力的影响超越了地球和太阳系。科学家们研究重力以了解诸如黑洞等现象，黑洞是空间中重力如此强大以至于没有任何东西，甚至光，都无法逃脱的区域。重力的研究在太空探索中也发挥着重要作用。在发射宇宙飞船时，工程师必须计算地球和目的地的重力，以确保任务的成功。 总之，重力的概念不仅仅是一个科学原理；它是我们存在的深刻方面。从我们日常生活的方式到宇宙的浩瀚，重力影响着一切。理解重力使我们能够欣赏支配我们世界的力量之间的微妙平衡，并激励我们进一步探索宇宙的奥秘。随着我们继续揭开重力的秘密，我们可能会进一步发现现实的本质以及我们在其中的位置。