The basic rules and words of Esperanto were proposed by L. L. Zamenhof at the end of the 19th century, the idea was to create a world language that everyone could speak.

世界语的基本规则和单词发明于19世纪末，为L.L. Zamenhof所创立，其目的是创造一种人人能说的世界通用语言。

youdao

L understand chemicals procurement, transportation, storage and use of security rules, in the process of familiar dangerous chemicals MSDS concerned and safety issues.

l了解化学品采购、运输、储存、使用过程中的安全规定，熟悉常见危险化学品的MSDS及安全要点。

youdao

That race will debut a new set of rules by the race organizers, the Automobile Club de l'Ouest, and it will see many of the world's great car makers competing with advanced hybrid prototype sports cars.

WSJ: Porsche GT3 R Hybrid; 2012 Porsche 911 S: Porsche Blasts Hybrids Into a New Stratosphere | Rumble Seat by Dan Neil

"We want to make sure that individuals do not lose their group health coverage because they lack information about the steps to take to protect those rights, " said Ann L. Combs , assistant secretary of labor for the Employee Benefits Security Administration, when the rules were released.

FORBES: COBRA's Bite