B 开头单词
be my guest 別客氣，請用；請便
be mutinous in one's heart 心中不服
be much the same 相伯仲
be much embarrassed 尲尬異常
be much concerned about sth 對……非常擔憂 非常關心某事
be moved to tears 感動得流出眼淚
be moved 被感動
be motivated purely by self-interest 一己爲私
be most willing to 心甘情願 毫不勉強 毫不委屈
be mortally afraid of death [語言學]貪生怕死
be mortally afraid 心驚肉顫
be more than enough 綽綽有餘
be more specific 詳細點 更具躰
be more exact 更確切地（說）