The causes of the shortage remain tangled, but a few factors are probably to blame.

短缺的原因很复杂，不过很有可能是以下几个因素造成的。

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There are a few possible causes for it.

这个情况可能的原因有一些。

youdao

There are a few possible causes for it.

这个情况可能的原因有一些。

youdao