The bank's definition of extreme poverty is stark , simple and even alliterative.在其历年采集的数据中, 身处如此艰难处境的人口首次少于10亿.They must each compose a poem in strict alliterative metre...他们必须每人作一首严格押头韵的诗。They must each compose a ...

n.光卤石（钾的原料），砂金卤石，杂盐...