Span two columns是什么意思？

• front
• neck
• 方案英语
• peeping
• narrow
• client
• maths
• aspect
• fiercely
• various
• 缺陷英文
• brat
• firmness
• 领域英语
• 参数英文
• permitted
• 来源英语
• default
• ultra
• disappointed
• silver
• 队长的英文
• ticket
• 纪念品英语
• general
• prompt
• searches
• polite
• tourist
• crayon

• droplets
• giraffe
• begins
• 导师英文
• pear
• intermission
• amazing
• failure
• profile
• text
• passage
• explore
• 局外人英文
• 造型的英文
• dragon
• erased
• tomato
• PEGGING
• toxicity
• 旋律的英文
• lake
• autumn
• fake
• emergency
• 流浪者英文
• juice
• 确认英文
• bothering
• cloud
• 分配英文

• unrig
• rennin
• noncommissioned
• noil
• Further forward
• go in for pomp
• plowstaff
• Debit of
• Ice and snow
• molecular formula
• divide line
• cholaemia
• thioridazine
• Access restrictions
• travel agents
• With the public
• Start doing it
• a war hysteria
• Cold and steep
• have an insight into
• tria