由于其核心的固定收益、外汇和大宗商品部门收入下滑，该部门上半年利润比去年同期下降了近30%。

First-half profits at the division were almost 30 per cent lower than a year before as revenue slipped at its core fixed income, currency and commodities division.

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工具栏是在用户需要使用应用程序时，可以控制该程序核心命令的一个可选的固定工具条。

This is an optional fixed bar available to an application at all times, whenever core commands are needed.

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然而，对于主体运营商来说，“四重奏”着实为占据他们很大一部分营业收入的核心业务——固定电话服务提供了保护。

For the incumbent telecoms operators, however, the quadruple play is all about protecting their core business of fixed-line voice calls, which still accounts for the bulk of their revenues.

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