他失神地望着窗外。He looked vacantly out of the window.她双唇微张，失神地望着前方。She was staring into space, her mouth slack.他那失神的样子使我怀疑他是否在听.The vacancy of his expression made me doubt if he was listening....
The method of deducing Pythagorean Triples ( irreducible and reducible ) is explained.并说明了互素勾 股数 组的导出方法....the irreducible complexity of human life.人的生活本就复杂，难以简化to cut staff to an irreducible minimum把职员减少到最低限度Expenditure...
The skin that what method does not let him is absent anile?有什么办法不让自己的皮肤不在衰老?And solve this problem to anile mine more show pressing.而解决这个问题对于衰老矿井更显迫切.This endangers anile mining area severely live and develop.这严重地危及到衰老矿区...