1. The untrained dog kept jumping on people.
那只未经训练的狗一直对人们跳跃。

2. She hired an untrained assistant to help with the project.
她雇了一位未经训练的助手来帮助完成项目。

3. The untrained workers made several mistakes on the job.
那些未经训练的工人在工作中犯了几个错误。

4. It's important to seek help from a professional rather than relying on untrained advice.
重要的是寻求专业人士的帮助，而不是依赖未经训练的建议。

5. The untrained singer struggled to hit the high notes.
那位未经训练的歌手很难唱到高音。

6. The untrained athlete was easily outperformed by his competitors.
那位未经训练的运动员很容易被他的竞争对手超越。