如果想在爱车上加装些额外装备，可以购买选装包。
If you want some additional equipment for your car then you can go for the optional package.
如果气候形式表明洪水有可能在某一区域发生，那么官员们就可以准备配有额外装备的避难处。
If climate models indicate that floods are likely in a given region, officials might stock shelters with extra supplies.
利用合适的补给品：每个观鸟者都知道他们需要一个好的野外向导和准确的视觉来观察鸟，但夏季观鸟需要额外的装备。
Use Proper Supplies: Every birder knows they need a good field guide and the right optics to see the birds, but summer birding requires some additional equipment.
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