idiom > a crushing burden
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Crushing burden
　　Explanation: Jun: the ancient unit of weight, combined three pounds. Analogy very heavy burden. Also be used to a very great responsibility.
　　Source: "Rule of Law and error" Ukraine has been held the weight of crushing, but not to much power changed hands. "
qiān jūn zhòng fù
　　Difficult to describe a major responsibility
Translated by Google
No. 3
　　千钧重负 (qiān jūn zhòng fù)
　　解释：钧：古代的重量单位，合三十斤。比喻很沉重的负担。也比喻非常重大的责任。
　　出处：《商君书·错法》：“乌获举千钧之重，而不能以多力易人。”
　　示例：如果继续不变的话，那就将给美国政府和美国人民以～和无穷祸害。 ★毛泽东《评赫尔利政策的危险》
　　用法: 作宾语、定语；指非常重大的责任
English Expression
  1. n.:  a crushing burden,  an exceptionally heavy load or responsibility