untrained
🇺🇸
/ˌʌnˈtreɪnd/
🇬🇧
/ˌʌnˈtreɪnd/
lacking the necessary education, experience, or skill for a particular job or activity
An untrained person might not know how to use this equipment properly.
一个未经训练的人可能不知道如何正确使用这个设备。