1. We do not expect untrained people to take risks.
    我们不主张未受过培训的人员去冒险。

1. 未训练过的：untight 未封严的 | untrained 未训练过的 | untransported 未搬运的

2. 未经训练的：untraceable 难以捉摸的 | untrained 未经训练的 | untrammeled 自由自在的

3. untrained的解释

3. 未切边的：untarred 未浸沥青的 | untrained 未切边的 | untreated felt 油毡纸原纸

4. 未受过训练的：untraceablecost 不可溯成本 | untrained 未受过训练的 | untraineddriver 无经验的驾驶员

1. 未经培训的；未经训练的；无经验的
    Someone who is untrained has not been taught the skills that they need for a particular job, activity, or situation.

    e.g. It is a nonsense to say we have untrained staff dealing with emergencies...
           说我们派未受过培训的员工来处理紧急事故简直是胡说八道。
    e.g. Our Intelligence Service was untrained, cumbersome, and almost wholly ineffectual.
           我们的情报部门人员缺乏训练，机构臃肿，简直毫无用处。

2. (嗓子)未受专门训练的；(心智)未受正规教育的
    If you describe a voice or a mind, for example, as untrained, you mean that it has not been developed through formal education or training.

    e.g. It was often said that he had the best untrained mind in politics.
           人们常说，他虽未受过专门训练却极有政治头脑。

1. not disciplined or conditioned or made adept by training

    e.g. an untrained voice
           untrained troops
           young minds untrained in the habit of concentration