But it is an excellent guide to what is going on inside the lib dems , as david cameron 's coalition partners endure their bumpiest weeks since entering government .

随着大卫卡梅伦的执政联盟伙伴经历了上台后最跌宕起伏的一周，这张袖珍地图是了解自由民主党内部事态发展的卓越向导。