选择客厅墙壁的颜色绝非易事。Choosing the colour for the drawing-room walls was no easy matter.盘活那家公司绝非易事。Turning the company around won't be easy.涉足教育界绝非易事.It is difficult to get a foot into the door of teaching....

“易事”的英语可以翻译为：duck soup ...