Upskilling is teaching workers new skills, or better ones, so they can do their jobs well — often because the job itself is changing. A factory buys new machines, so the staff need training: that is upskilling. A company brings in new software, and the office workers take courses: upskilling. It is used both for what the employer does to the workers and for what a worker does for themselves ('I spent the year upskilling'). This word belongs to a particular world — human resources, government reports, job advertisements, news stories about technology and work. It came into heavy use as computers and now AI changed what jobs require. You will see it constantly in that kind of writing and much less often in ordinary conversation between friends. Here is the honest part, and your students should hear it. The word sounds positive and hopeful, and employers choose it for exactly that reason. It is a kinder word than the situation often is: sometimes 'we are upskilling our staff' really means 'these people's old jobs are disappearing.' So the word is true, but it is also a little polished. There is a related word, 'reskilling', which means training someone for a genuinely different job, not just a better version of the same one. The two overlap and people mix them up freely.

技能提升、職能再造（員工培訓學新技能）。政府和企業文件裡常見