求此poem的主題, 解釋, 暗喻, 背後的意思. 原文如下:
The widest prairies have electric fences,
For though old cattle know they must not stray.
Young steers are always scenting purer water
Not here but everywhere. Beyond the wires
Leads them to blunder up against the wires
Whose muscle-shredding violence gives no quarter.
Young steers become old cattle from that day,
Electric limits to their widest senses.
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