他原以为这份高薪工作是天上掉馅饼，入职后才发现工作比想象中辛苦得多。
He initially thought the well-paid job was a windfall, but after starting work he discovered that it was much harder than he had imagined.
He initially thought the well-paid job was a windfall, but after starting work he discovered that it was much harder than he had imagined.