很难找出原因
It's very difficult to find out the reason.
以上为机器翻译结果，长、整句建议使用 人工翻译 。
操作风险通常很难找出特定的风险显现的原因，而且多个原因共同作用风险才体现出来的情况也不在少数。
It is normally difficult to narrow down the factors causing such risk to materialize, and quite often, it only emerges when several factors come into play simultaneously.
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