在短短六个月内从零开始学习编程绝非易事。

Learning to code from scratch in just six months ___is ___no ___mean ___feat.

对她来说，平衡工作和家庭责任绝非易事。

It ___was ___no ___mean ___feat for her to balance work and family responsibilities.

对任何运动员来说，赢得奥运金牌都绝非易事。

Winning an Olympic gold medal ___is ___no ___mean ___feat for any athlete.