代用不熟练工人

例句：

1. 1. He used to be a professional musician, but now he's just an amateur.
   他以前是个职业音乐家，但现在只是个业余的。
2. 2. The company is using a new technology to replace the old one.
   这家公司正在使用新技术来替换旧的。
3. 3. She had to use her own skills to fill in for someone who couldn't make it.
   她不得不用自己的技能来代替不能来的人。