天然气

天然 tiānrán HSK 6 #8,799

natural; innate / nature-made (not artificial)

天气 tiānqì HSK 1 #2,014

weather

煤气 méiqì HSK 5 #7,986

coal gas; gas (fuel) / piped gas for cooking/heating

纯天然 chúntiānrán #27,567

all-natural / purely natural / 100% natural

天才 tiāncái HSK 5 #2,329

talent; genius / gifted person

气体 qìtǐ HSK 5 #5,836

gas (gaseous substance)

偶然 ǒurán HSK 5 #4,692

by chance / accidentally / coincidental

脾气 píqi HSK 5 #3,350

temperament; disposition / temper; bad temper

客气 kèqi HSK 5 #1,265

polite; courteous / modest; humble

居然 jūrán HSK 5 #1,043

unexpectedly; to one's surprise / actually (expressing disbelief)