But the most dramatic growth is underground, where the roots grow very strong.
但是最戏剧性的变化发生在地下,生长在地下的竹根长得很壮。
And most of the rising tide of noise-a hundred-fold increase since 1960, in many areas-is created simply by the dramatic growth in shipping traffic.
而大部分上升的噪声潮- - -自1960年来增加了百倍,在许多地方,仅仅在船运交通中创造巨大的增长。
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