The teachers are store employees, many of them older and semi-retired from a skilled trade, or laid off.
这些教师都是商店雇员，其中许多人年龄较大，已经从熟练的行业中半退休或下岗。
2
By the time Wilson left GM, almost half of all US families fell within the middle range of income. Most were headed not by professionals or executives but by skilled and semi-skilled factory workers.
What is needed is business innovation that finds creative ways of serving consumers at the bottom of the pyramid using an unskilled and semi-skilled workforce from lower tiers of the talent market.