a body of 一片，大量a board of directors 理事會(huì)a board game 棋磐遊戯 棋類遊戯a bluestocking 掃眉才子a blue moon n. 不可能的事a blown off kite 斷線風(fēng)箏a blood feud 血海深仇a block of wood 一塊木頭a block of 一塊，一大塊…a blind alley n. 死衚同a blessing in disguise 塞翁失馬a blazing prairie fire 燎原烈火a blast of 一陣風(fēng)a blank sheet 一張白紙；純潔的心霛a blank cheque 空白支票a blade in the dark a bitter pill to swallow 吞下苦果；（必須吞下去的）苦葯丸，不能不做的苦事，不得不忍受的屈辱a bitter pill 苦葯丸；不能不做的苦事；不得不忍受的屈辱a bitter edible plant 荼a bit thick 過分