overground

基本解釋

When the roots become trees underground, the trees are also roots overground.
當根漸漸成了地下的樹，樹也就成了地上的根。
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The Overground, a once grubby railway that crosses the Olympic site, has new infrastructure.
地面上，穿越奧林匹克場地的曾經(jīng)骯臟的跌路已經(jīng)被新的基礎設施取代。
Because of the transaction costs, while engaging in economic activities people are faced with two alternatives: underground economy or overground economy.
由于交易成本的存在，使人們在進行經(jīng)濟活動時，面臨著地上經(jīng)濟還是地下經(jīng)濟的選擇。