The operation of using a telegraph key.
在处理过程中中断或改变某一操作。
One of the key steps was the largest training programme for journalists the Telegraph had every launched.
其中很关键的一步是记者培训计划，这是每日电讯公司有史以来规模最大的培训。
One of the key steps was the largest training programme for journalists the Telegraph had every launched.
其中很关键的一步是记者培训计划，这是每日电讯公司有史以来规模最大的培训。
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