正如1750年没有人能够预测蒸汽机的影响，或者1450年的人们之于活字印刷术，还有1950年的人们之于晶体管，现在的人们也难以预知3d印制技术的长期影响。
Just as nobody could have predicted the impact of the steam engine in 1750-or the printing press in 1450, or the transistor in 1950-it is impossible to foresee the long-term impact of 3d printing.
正如撒哈拉沙漠之于非洲，荒漠化同样威胁着南澳大利亚。
Much like the Sahara in Africa, desertification also threatens South Australia.
德鲁克对管理学贡献巨大，其价值正如约翰.凯恩斯之于经济学。
What John Keynes is to economics, Druckers is to management.
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