There are many different cycles in nature, such as the cycle of seasons.
A cycle is a series of events that repeat, such as the daily cycle of light and dark.
(The time it takes for a cycle to repeat itself it its period.)
To evolve means to change or improve over a period of time.
In biology, the theory of evolution says that advanced life forms such as humans have evolved from lower forms of life.
(Life forms evolve because they have to adapt in order to survive.)
A force of attraction brings two objects closer together, such as the force of gravity.
A force of repulsion pushes two objects away from each other, such as the force between two electrons.
(Gravity is a force of attraction between two objects with mass.)
(If two people are attracted to each other, they want to be together.)
To transform means to change from one form into another.
A transformation occurs when an object takes on a new appearance or structure.
(A good leader can transform an unsuccessful company into a successful one by changing how it is organized.)
(In marriage, a wife’s attempt to transform the behavior of her husband is often unsuccessful.)
To inherit something means to get it without having to ask or work for it.
A child from a very rich family may inherit a lot of money.
(Eye and hair color are inherited traits.)
(Over a period of time, the process of evolution can transform the appearance of species of life.)
force of attraction 引力
gravity 英 [ˈɡrævəti] 美 [ˈɡrævəti] n. 重力;地球引力;严重性;严肃;庄严
repulsion 英 [rɪˈpʌlʃn] 美 [rɪˈpʌlʃn] n. 嫌恶感;强烈的反感;憎恶;排斥力;斥力
inherit 英 [ɪnˈherɪt] 美 [ɪnˈherɪt] v. 继承(金钱、财产等);经遗传获得(品质、身体特征等);接替(责任等);继任
