

大学で海洋の研究をしています。
海洋汚染は深刻な問題になっています。
将来は海洋に関わる仕事がしたいと思っています。
"かいよう(海洋)" is in the lesson "Countryside" (Level 16), along with 10 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.