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学习者；初学者
A learner is someone who is learning about a particular subject or how to do something.
例句
...a new aid for younger children or slow learners...
针对年幼者和学习迟缓者的新教辅手段
Learner drivers must be supervised by adults who are at least 21 years old.
驾驶学员必须由21岁以上的成年人监督驾驶。