必应 Traditional form: 必應 Pinyin (reading): Bìyìng Definitions: Bing (search engine) Characters: 必 - surely, certainly; must; will 应 - should, must; to respond, to handle; to deal with, to cope Traditional characters: 必 - surely, certainly; must; will 應 - should, must; to respond, to handle; to deal with, to cope