他在实践中积累了丰富的经验。
我在学好各门专业课的同时，还利用课外时间积极参与社会实践活动，在实践中积累了不少经验。
I learn the professional course in the same time, but also the use of extra-curricular time to actively participate in social practice, in practice has accumulated a lot of experience.
SDH传输网络是一个复杂的网络系统，维护人员必须在实践中不断积累经验，提高网络故障的处理能力。
SDH transmission network is a complicated network system, the attendant should accumulate experience and steadily improve fault treatment ability for keeping the network to running normally.
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