In the last section (Line 10), your script can check for and handle any extra information that was provided but isn't associated with any of the valid options.
在最后一部分中(第10行)，脚本可以检查并处理命令行中不与任何有效选项相关联的额外信息。
Before opening any door in the fire area, check it with the back of your hand first. A hot door handle indicates that the fire has spread, do NOT open the door.
如需打开着火区的门之前，首先用您的手背进行检查门的把手，如果门把手发热表明火势已经蔓延，不要打开门。
Before opening any door in the fire area, check it with the back of your hand first. A hot door handle indicates that the fire has spread, do NOT open the door.
如需打开着火区的门之前，首先用您的手背进行检查门的把手，如果门把手发热表明火势已经蔓延，不要打开门。
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