Jisho

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Noun
1. reef; sunken rock
Noun
2. unforeseen difficultySee also 暗礁に乗り上げる
  • ゆにゅう輸入
  • わりあ割り当て
  • りょう
  • について
  • たこくかん多国間
  • ぼうえき貿易
  • こうしょう交渉
  • あんしょう暗礁
  • のりあ乗り上げて
  • しまいました
Multilateral trade negotiations ran aground over import quotas.
Wikipedia definition
3. ReefIn nautical terminology, a reef is a rock, sandbar, or other feature lying beneath the surface of the water (six fathoms or less beneath low water). Many reefs result from abiotic processes—deposition of sand, wave erosion planning down rock outcrops, and other natural processes—but the best-known reefs are the coral reefs of tropical waters developed through biotic processes dominated by corals and calcareous algae.
Read “Reef” on English Wikipedia
Read “暗礁” on Japanese Wikipedia
Read “Reef” on DBpedia

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