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

5 艰苦 jiānkǔ arduous 7 艰苦奋斗 jiānkǔ-fèndòu to struggle arduously

ENGLISH 6000 THEME WORDS


OXFORD 5000 CORE WORDS



TANAKA 6000 CORE WORDS









Cuộc sống của họ rất khó khăn .



Their lives are very hard .
Cuộc sống của họ rất khó khăn .

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(1993)