湿度: humidity level...
分类: classification...
退休金: retirement pay, pension...
如何: how, what way, what...
枯燥: dry and dull, uninteresting, dry-as-dust...
后者: the latter...
峰会: summit meeting...
荆棘: thistles and thorns, brambles, thorny undergrowth...
糊涂: muddled, silly, confused...
幻影: phantom, mirage...