Unemployment is the straw that will break the camel's back.

失业问题将会是压倒骆驼的最后一根稻草。

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Apparently, the process from commonplace to big accomplishment was not a cumulative one, just like you will never accurately measure how many straws can break the camel's back. What is ordinary?

碌碌无为到有成就的过程明显不是个逐步累积的过程，就想你永远不会精确地测量出到底第几根稻草会压死一头牛。

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Optimists in Bangladesh feel the Rana Plaza tragedy could be the straw that will break the camel's back.

BBC: Dhaka factory collapse: Can clothes industry change?