二的二倍是四。 Two times two is four. Pinyin Èr de èr bèi shì sì. Bopomofo ㄦˋ ˙ㄉㄜ ㄦˋ ㄅㄟˋ ㄕˋ ㄙˋ。 Where this sentence is used How to use 倍 (bèi) in Chinese grammar: -times, -fold and multiplication All Chinese example sentences