Citrus growers were cautioned to protect the fruit from frost. 種柑橘者受到防霜保橘的勸告。
As a small-scale illustration of the artificial modification of physical weather processes, take the frost prevention in an orchard. 我們可舉果園中防霜作為說(shuō)明對天氣的物理過(guò)程進(jìn)行小尺度人工影響的例子。
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