Some teachers do not have the benefit of a preparatory course and must learn while teaching in schools, a condition referred to as on-the-job training.是什么意思_Some teachers do not have the benefit of a preparatory course and must learn while teaching in schools, a condition referred to as on-the-job training.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句