复数： incumbencies

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The dollar 's attractions as a bolthole are partly a benefit of incumbency .

美元作为避险货币的魅力，在一定程度上得益于它主导货币的地位。

Most of all , london benefits from incumbency and a long history as a financial centre .

首先，伦敦得益于主导地位和作为一个金融中心的悠久历史。

Incumbency has its risks and costs , as well as its many advantages .

在任总统有许多优势，但也有风险与代价。

That suggests incumbency was not a factor in the original result .

这表明“执政党”不能对最初的研究结果产生影响。

Incumbency is a powerful barrier in industries , such as finance , where there are strong network effects .

在金融业这样的行业当中，商务网络效应强烈，伦敦城的主导地位是一项很难跨越的障碍。