I have been office clerk, telegrapher, newspaper reporter, feature writer, advertising writer, farmland salesman.

我做过办公室文员、报务员、新闻记者、专题作家、广告作家、农田推销员。

By the time he was 12 he was a telegrapher and everlastingly trying to make that system of communication work better.

到他12岁时，他当上了报务员，他坚持不懈地努力尝试改进这种通信系统。