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1·总统约翰·亚当斯于1800年为国会议员创办了这个图书馆。
President John Adams started the library in 1800 for members of Congress.
2·遗憾的是，科学家们在每升雪里发现1800粒塑料微粒。
Sadly, the scientists found 1800 pieces of microplastics per liter of (每升) snow.
3·国会图书馆成立于1800年。
The Library of Congress was established in 1800.
4·1800年至今，教科书都是这样做的：提出问题，让学生做归纳性回答。
From 1800 to the present day, textbooks have done this by posing questions for students to answer inductively.
5·1650年到1800年这段时间见证了一些设计合理、技术先进的水轮的诞生。
The period from about 1650 until 1800 saw some excellent scientific and technical investigations of different designs.
6·到了1800年，一千多台蒸汽机在不列颠群岛运行，直到19世纪30年代，英国一直垄断着蒸汽机的生产。
By 1800 more than a thousand steam engines were in use in the British Isles, and Britain retained a virtual monopoly on steam engine production until the 1830s.
7·这种想法出现于公元1800年左右，当时人口变得足够多，大约有10亿人，人类的活动开始能够改变环境。
The idea is that around the year 1800 CE the human population became large enough, around a billion people, that its activities started altering the environment.
8·1800年4月24日，国会通过法案，规定将美国政府迁移到新的联邦城市华盛顿特区。
Approved April 24, 1800, the act of Congress that made provision for the removal of the government of the United States to the new federal city, Washington, D.C..
9·这一“五分之三准则”使南方各州在选举团中的选票膨胀，从而使杰弗逊在1800年的总统选举中险胜。
The three-fifths formula handed Jefferson his narrow victory in the presidential election of 1800 by inflating the votes of the southern states in the Electoral College.
10·最大的进步开始于1800年，当时法国人尼古拉斯·阿佩尔发现，他可以把某些食物密封在罐子里，不让空气进入。
The greatest single advance began in 1800 when a Frenchman, Nicolas Appert, discovered that he could preserve certain foods by sealing them in jars and keeping the air from them.