Arm's length trade 常规交易
arm's-length trade flows 正常的交易流量
·2,447,543篇论文数据，部分数据来源于NoteExpress
But many complex derivatives, such as mortgage-backed securities, do not trade smoothly and frequently in arm's length markets.
可是有许多复杂的衍生品，比如抵押贷款证券，在和我们有着一定距离的市场中，进行着既不平稳又不频繁的交易。
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