a road vehicle that has four wheels, an engine, and a small number of seats for people
汽车
我们要去公路旅行并租一辆车。
an electronic device that stores and processes data
电脑, 计算机
电脑拥有大容量的文件存储空间。
(biochemistry) a chemical substance that carries the genetic information, which is present in every cell and some viruses
DNA, 脱氧核糖核酸
每个DNA分子由两条链组成，形成双螺旋形状。
a source of power used for lighting, heating, and operating machines
电
通过在不使用时关灯来节省电力是很重要的。
(biology) the slow and gradual development of living things throughout the history of the earth
进化
基因突变在推动种群内的进化变化中起着重要作用。
(physics) the universal force of attraction between any pair of objects with mass
重力
行星表面的重力强度取决于其质量和半径。
a global computer network that allows users around the world to communicate with each other and exchange information
互联网
他使用互联网听音乐和流媒体电影。
an instrument that makes looking at tiny objects or organisms possible by enlarging them which is useful in scientific studies
显微镜, 双目放大镜
在显微镜下，昆虫翅膀的微小细节变得清晰可见。
a type of energy generated by splitting atoms to release their stored energy
核能, 核动力
该国正在投资核能以减少对化石燃料的依赖。
any of variation of antibiotics obtained from Penicillium moulds and used to treat or prevent a wide range of bacterial infections
青霉素, 青霉素类抗生素
他对青霉素过敏，需要一种替代抗生素。
the act of reproducing something by pressing an ink-covered surface against paper
印刷
这本书的印刷花费的时间比预期的要长。
a communication device used for talking to people who are far away and also have a similar device
电话, 手机
她拿起电话给她的朋友打电话。
a piece of equipment by which the far objects, particularly those in space, are made clearly visible
望远镜, 天文望远镜
望远镜提供了月球表面的清晰视图。
an electronic device with a screen that receives television signals, on which we can watch programs
电视, 电视机
客厅里的电视相当大。
any of the circular objects typically found under vehicles like cars, bicycles, buses, etc., used to make movement possible by turning
轮子, 轮胎
卡车的轮子在停下时发出了刺耳的声音。
the activity or skill of making words on paper or a screen to express ideas or information
写作, 书写
清楚地写作对于良好的沟通很重要。
