What's the most important factor, both in government or business, for keeping running costs low?

⽆论是在政府或企业，能使运⾏费⽤低廉，最重要的因素是什么？

Better efficiency reduces fuel costs, which represent a major chunk of the running costs of a vehicle.

更高的效率降低了燃料成本，而燃料成本是车辆运行成本的主要组成部分。

It also runs up operating costs as each flight necessitates a brand new aircraft and aircrew both.

它还增加了运营成本，因为每次飞行都需要一架全新的飞机和机组人员。

Tenants typically bring their own computing and networking kit, and foot the bill for running costs (including energy).

租户通常会自带计算和网络套件，并支付运行成本（包括能源）。