reecho
... re-echo 回声 reecho 再反响 reechy 恶臭的 ...
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当钢索在疏通堵塞物时，要注意钢索的反响，假如发现堵塞物较难经过，要恰当收回必定钢索，再逐渐向前疏通。
When the wire rope in dredging obstruction, pay attention to the wire, if discover obstruction difficult to pass, to the appropriate recycling must wire, and then gradually opening up ahead.
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