What if your projector blew a light bulb (and you forgot to bring a spare) or your briefcase was lost at the airport?
例如，投影仪上的电灯泡坏了（而你又没有带备用的），或者你的公文包落在机场了。
2
Travel light (financially) and carry a spare card.
轻装上路(财务)带一张备用银行卡。
3
The reports - usually spare summaries but sometimes detailed narratives - shed light on some elements of the war that have been largely hidden from the public eye.