If possible keep a spare pair of glasses accessible in case your main pair is broken or lost.如有可能留一副备用眼镜以防你常用的那副打碎或丢失。
You got here with ninety seconds to spare.你们到达这里时还剩有90秒钟。
Give me the boot key and I'll get the spare.给我行李箱钥匙,我去配一把备用。