

여름에는 오이를 많이 먹어요.
[jʌlɯmenɯn oilɯl mani mʌkʌjo.]
I eat a lot of cucumbers in the summer.
김밥에 오이를 넣지 마세요.
[kimpape oilɯl nʌt͡ɕʰi masejo.]
Please don't put cucumber in the gimbap.
시장에서 오이 세 개를 샀어요.
[sit͡ɕaŋesʌ oi se kɛlɯl sas͈ʌjo.]
I bought three cucumbers at the market.
"오이" is in the lesson "Exotic vegetables" (Level 10), along with 12 other useful words. LinDuo has 180 topic lessons like this one, 2,380 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.