has the same form in the nominative plural. However, a more common usage is to write, say, 20 cents as 0,20 evrur. Ido In Ido, there is a rule that "every word pertaining to a national or local custom will get imported to the language without change or adaption, both the singular and the plural forms alike" (known as vorti stranjera – foreign words). This gets especially applied to "currencies, weights and measurements that don't belong to the metric system" (according to KGD, Kompleta Gramatiko Detaloza – Ido's grammar book). Thus the best word for "euro" would be just euro, like dollar and pound, with the plural probably kept the same: euro, since most languages do that. In common speech, though, many Idists commonly refer to the currency as euro and euri as if it got fully adopted to the language because of the common use of the currency. Similarly, "cent" is cent, with the plural imported from its source, English: cents. For both words, there are two other possibilities for pluralization. The native plural -i could be added to the vorto stranjera with the dash to mark that it's a foreign word: cent-i and euro-i, or to add the plural definite article le: le cent and le euro, though that generally means "the cents" and "the euros". Interslavic In Interslavic, the diphthongs /au/ and /eu/ are generally written as av and ev, which is common in Slovene, Sorbian and (usually) the Slavic languages that use Cyrillic. Thus, the Interslavic word for "euro" is evro, which is an indeclinable neuter noun. It can both be pronounced or . The word for "cent" is cent (pronounced ), which is declined like an inanimate masculine noun: gen.sg. centa, nom.pl. centy, gen.pl. centov, etc. Japanese In Japanese the euro is called "yūro" (ユーロ) based on the English pronunciation, using the katakana syllabary employed for foreign words. However, the word for Europe in Japanese is "yōroppa" (ヨーロッパ), probably borrowed from the Portuguese Europa () or from the Dutch "Europa", not English. The cent uses the same word employed for all currencies using cents. This is rendered "sento" (or セント in the katakana script) and it is also based on the English pronunciation. In Japanese, like other East Asian languages, no plurals are used for units so both "yūro" and "sento" are used as the singular and plural. Korean In Korean of South Korea, the