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Duolingo Inc. [b] is an American educational technology company that produces learning apps and provides language certification.Duolingo offers courses on 43 languages, [5] ranging from English, French, and Spanish to less commonly studied languages such as Welsh, Irish, and Navajo, and even constructed languages such as Klingon. [6]
Jarava ichu, commonly known as Peruvian feathergrass, [3] ichhu, paja brava, paja ichu, or simply ichu (Quechua for straw), [4] is a grass species in the family Poaceae native to the Americas. It is found growing in a vast area: Mexico , Guatemala , Costa Rica , El Salvador , Venezuela , Bolivia , Colombia , Ecuador , Peru , Dominican Republic ...
Reverso's suite of online linguistic services has over 96 million users, and comprises various types of language web apps and tools for translation and language learning. [11] Its tools support many languages, including Arabic, Chinese, English, French, Hebrew, Spanish, Italian, Turkish, Ukrainian and Russian.
Arundo donax is a tall, perennial grass in the subfamily Arundinoideae, characterised by C3 photosynthesis. The stems produced during the first growing season are unbranched and photosynthetic. In the Mediterranean , where a temperate climate is characterized by warm and dry summer and mild winter, new shoots of giant reed emerge around March ...
Hilaria belangeri is a species of grass known by the common name curly mesquite, sometimes written curlymesquite or curly-mesquite. It is not related to mesquites, which are legumes. This grass is native to Mexico and the southwestern United States from Arizona to Texas. [1] This perennial grass forms tufts of stems growing up to about 30 cm tall.
Duolingo logo. In 2009, von Ahn and his graduate student Severin Hacker began to develop Duolingo, a language education platform. They founded a company of the same name, with von Ahn as chief executive officer and Hacker as chief technology officer. In November 2011, a private beta test of Duolingo was launched and the app was released to the ...
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Poa pratensis, commonly known as Kentucky bluegrass (or blue grass), smooth meadow-grass, or common meadow-grass, is a perennial species of grass native to practically all of Europe, North Asia and the mountains of Algeria and Morocco.