HSK 3.0 11000 CHINESE WORDS
ENGLISH 6000 THEME WORDS
OXFORD 5000 CORE WORDS
TANAKA 6000 CORE WORDS
chưa hề vẩy ra trước đây 
to have never happened before
[ chưa ] : not yet, yet (to happen)
[ hề ] : (1) to matter; (2) sound of laughing; (3) clown, funny-man
[ vẩy ] : scab
[ ra ] : to go out, exit, give, issue, emit, leave
[ trước ] : before, in front, previously; faced with, in the face of, ahead of
[ đây ] : here, this place, this
chưa hề vẩy ra trước đây to have never happened before [ hề ] : (1) to matter; (2) sound of laughing; (3) clown, funny-man
[ vẩy ] : scab
[ ra ] : to go out, exit, give, issue, emit, leave
[ trước ] : before, in front, previously; faced with, in the face of, ahead of
[ đây ] : here, this place, this