Insects are fairly low down (on) the food chain.
在食物链中，昆虫是相当低的一级生物。
Further down the supply chain lie raw materials.
顺着供应链往下找，来到了原材料层。
We had to move water by a chain pump because the electric pump had broken down.
抽水机坏了，只好用人工车水。
Each time you wanted to go up or down you had to pull a chain.
每次你想上去或是下来你都得拉一下链子。
Life is not to drag down the chain, but to spread my wings. - Hugo.
人生下来不是为了拖着锁链，而是为了展开双翼。——雨果。
Under some circumstances, traditional global supply chain may be turned upside down.
在某些情况下，传统的全球供应链甚至被颠倒过来。
She was broken down by a chain of events.
她被这一连串的事情打垮了。
Unfortunately, the giant food chain turned him down.
可惜的是，饮食巨头拒绝了他的提议。
Unfortunately, the giant food chain turned him down.
可惜的是，饮食巨头拒绝了他的提议。
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