

우리 집은 십팔 층이에요.
[uli t͡ɕipɯn sippʰal t͡ɕʰɯŋiejo.]
My home is on the eighteenth floor.
십팔 번 문제는 쉽지 않아요.
[sippʰal pʌn munt͡ɕenɯn swipt͈͡ɕi anajo.]
Question eighteen isn't easy.
기차가 십팔 분 늦었어요.
[kit͡ɕʰaka sippʰal pun nɯt͡ɕʌs͈ʌjo.]
The train was eighteen minutes late.
"십팔" is in the lesson "Numbers" (Level 3), along with 19 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.