length : the number of character for the word
word : the text
sentence : that sentence that word can be used, the word is changed to pinyin to show the word's location
english ; the meaning of that sentence
HSK ; the level that the word belong to

length: 1
sentence: 需刷牙以去除牙ban1.
english: It is necessary to remove plaque by brushing one's teeth.
HSK: 6