The net costs were estimated according to the cost of implementing the intervention activity minus the cost being avoided owing to decreasing of stroke incidence.

按照项目所需的实际投入和减少脑卒中发病所需的医疗费用计算净成本，根据净成本和干预效果计算效果和效益指标。

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Seconds after his crucial save, the keeper on loan from Portsmouth hauled down Brynjar Gunnarsson just as the Icelandic defender looked set to stroke into an empty net.

BBC: Stoke see off Bournemouth

Gathering the ball in his own half, the forward dribbled by an opponent before slipping through both central defenders and rounding the goalkeeper with nonchalance to stroke the ball into an empty net to send Hampden delirious with delight.

BBC: Scotland 2-0 Macedonia