他受到她的青睐实非所愿。

He became the unwilling object of her attention.

《牛津词典》

主平方根函数是使用非正实轴作为分支切割定义的。

The principal square root function is defined using the nonpositive real axis as a branch cut.

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然而，至今为止仍然未明确该法则如何应用，或者如何阻止一些类型的自营交易，而把他们从作价市场中区分出来实非易事。

However, it is not yet clear how the rule will be applied or how it will prevent some types of proprietary trading that are difficult to distinguish from market-making.

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