Four new chemical elements have been officially added to the periodic table.
四种新的化学元素已经正式被添加到元素周期表中。

The International Union of Pure and Applied Chemistry announced names of the new elements earlier this week. They are Nihonium (Nh), Moscovium (Mc), Tennessine (Ts), and Oganesson (Og).
国际纯粹与应用化学联合会本周早些时候宣布了这些新元素的名称。它们分别是Nihonium（NH），Moscovium（MC），Tennessine（TS），和Oganesson（OG）。

The names were chosen by the scientists who discovered them. All of the elements are man-made, created in labs by nuclear researchers. Those researchers are from Japan, Russia and the United States.
这些名字是发现它们的科学家选择的。所有这些元素都是核研究人员在实验室人工合成的。这些研究人员来自日本、俄罗斯和美国。

Moscovium is named after Moscow, the Russian capital. Oganesson is named in honor of the 83-year-old Russian researcher Yuri Oganessian. Oganesson is only the second element to be named after a living scientist.
Moscovium是以俄罗斯首都莫斯科命名。Oganesson的命名是为了向83岁的俄罗斯研究员Yuri Oganessian致敬，而且它是第二种以在世科学家名字命名的元素。

Tennessine is named after the American state of Tennessee. American researchers named the new element. They work for Oak Ridge National Laboratory and Vanderbilt University, both of which are based in the state.
Tennessine是以美国田纳西州命名。美国研究人员给这种新元素命名。他们在橡树岭国家实验室和范德堡大学工作，这两者都位于田纳西州。

A group of Japanese researchers came up with the name for the fourth new element, Nihonium. The word "Nihon" means Japan in Japanese.
一组日本研究人员提出了第四种新元素的名字Nihonium。Nihon这个单词在日语中意思是日本。

Elements can be named for an idea or character in mythology, a mineral, a place, a scientist or a property of the element.
元素命名可以取自神话中的概念或角色、矿物质、地点、科学家或是这种元素的属性。

The chemistry union usually likes names that are easy to translate across major languages. The names must have endings like "-ium," "-ine" or "-on," depending on the grouping of elements they belong to.
化学联合会通常喜欢在主要语言中容易翻译的名字。这些名字必须以ium、ine或on结尾，这取决于它们所在的元素分组。

The four new names will now be under consideration for five months to give time for any possible objections.
这四个新名称现在将会经过五个月的慎重考虑，为任何潜在反对意见提供时间。