Level 4 - Unit 2 - Part 1 Vocabu

The controlled use of fire allowed people to cook food and survive in the colder climates. Fire provided light so that people could work and socialize for longer hours.
控制火的使用使得人类可以烹饪食物并在寒冷的气候中生存。火带来了光明，所以人类有了更长的时间用于工作和社交。

With the invention of agriculture, people could grow food and settle into communities. By growing food, people could spend less time hunting, and more time for other things such as art.
随着农业的发明，人类可以种植食物，聚居生活。因为种植食物，人类可以花更少的时间用于打猎，而把更多的时间用于其他事情，比如艺术。

The domestication of animals allowed people to raise and use animals for food and work. By raising herds of animals such as sheep, humans had a regular supply of meat and clothing. The strength of animals such as horses and oxen was used for work and transportation.
动物的驯化让人类能够饲养动物，并将其作为食物，用于工作。通过饲养羊群等动物，人类有了固定的肉类和衣物供应。马和牛等动物的力量被用于工作和运输。

The development of tools and machines has resulted in more efficient manufacturing and construction. With better tools and machines, work can be done with fewer people and at much lower costs.
工具和机器的发展让生产和建设更有效，有了更好的工具和机器，完成工作所需的人力会更少，成本更低。

The development of science engineering has improved many things, including communications. With an understanding of electricity, telephones and radios allow people to communicate over long distances.
科学技术的发展改善了许多事物，包括通讯。因为电的掌握，电话和收音机让人们能够远距离通信。