1 (wiktionary) 2 (vi.wikipedia) 3 (en.wikipedia) 4 (glosbe)



Compounds Expand your vocabulary by studying more complex words built by the 'core words'.
Etymology Explore the origin of the 'core words'.
Wordsense Learn about the wordsenses of the english term.


TOPIK 11000 KOREAN WORDS

HSK 3.0 11000 CHINESE WORDS

2 难题 nántí problem, Gordian knot, grief, sticker, question, enigma, difficult problem, puzzler, spinosity, stickler, a hard nut to crack, puzzle, toughie, poser, difficulty, crux, nut, challenge, tickler, conundrum, knot, hump, knottiness, stinker, puzzlement, teaser, stumper, twister 7 出难题 chū nántí to raise a tough question

ENGLISH 6000 THEME WORDS


OXFORD 5000 CORE WORDS



TANAKA 6000 CORE WORDS









Anh ấy không biết làm thế nào để giải quyết vấn đề này .



He doesn't know how to solve this problem .
Anh ấy không biết làm thế nào để giải quyết vấn đề này .

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