A century earlier, Henry Cavendish had noted the existence of a residual gas when oxygen and nitrogen are removed from air, but its importance had not been realized.
一个世纪前,亨利·卡文迪什注意到当空气中的氧气和氮气被除去,还有其他剩余气体存在,但人们还没有认识到它们的重要性。
Its author, Dr. Henry Petroski, has long been writing about disasters.
它的作者亨利·佩卓斯基博士,长期以来一直在写关于灾难的文章。
Its views attract many hikers. Henry Grant, a college student at Ithaca College, was one of them.
其风光吸引了众多徒步者。伊萨卡学院的学生亨利·格兰特就是其中之一。
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