(这个想法无疑可以追溯至公元前600年左右建造的巴比伦空中花园)然而，到目前为止，这个想法仍然停留在绘图板上。

(the idea can arguably be traced back as far as the Hanging Gardens of Babylon, built around 600bc.) So far, however, the idea remains firmly on the drawing board.

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几十个研究人员坐在一排排的桌子前，而在繁忙的制图室里，设计人员坐在高高的凳子上，对着绘图板，制作复杂精美的报告和图表。

There were dozens of researchers seated in rows of desks and a bustling chart room where designers, perched on high stools at drafting tables, created elaborate presentations and charts.

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