In 1978, a dredging gang working for British Waterways was struggling with a problem. They were trying to clear obstacles on the Chesterfield Canal so they could stabilise a concrete wall — not an easy day’s work. But what really had them stumped was a heavy iron chain on the canal bottom. After various attempts, they hooked the chain to their dredger. That did the trick. A firm pull removed the chain and the block of wood on the end of it. The gang took a well-earned break for tea.
1978年，一支为英国水道局(British Waterways)工作的疏浚队正面临难题。他们试图清理切斯特菲尔德运河(Chesterfield Canal)中的障碍物，以便加固一面混凝土墙——这本就不是一项轻松的工作。但真正让他们很难应对的，是运河底部的一条沉重铁链。经过多次尝试后，他们终于用挖泥船钩住了铁链。这次终于奏效了。用力一拉，铁链和末端的木块一起被拉了上来。队员们于是痛痛快快地休息，喝起了茶。
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