Character Details must; most certainly; necessarily; inevitability; required toPlayAscii: 24517w281HanyuPinyinPhoneticsToneCategoryAlternative Sounds必bìbee48PlayFrequencyEquationComponentsWikitionaryPicture327N/AN/A必 linkStoryNotesYou swear you'll be in love forever, but certainly there comes a time when your heart is divided.NoneExamples1. 5319 It's unnecessary2. 5100 --Research Pending--Strokes