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Man barricades against himself.

The clouds over the land now rose like mountains, and the coast was only a long green line with the gray blue hills behind it. The water was a dark blue now, so dark that it was almost purple.

水產(chǎn)養(yǎng)殖的效率不僅僅是利潤(rùn)問(wèn)題；它關(guān)乎減少浪費(fèi)和最大化資源利用。

科學(xué)不僅僅是尋找答案，更是提出正確的問(wèn)題。