three and a half hours的近义词,急用!

three and a half hours的近义词,急用! two hours and a half lt took them three and a half hours to fly to London改为同义句 I spent three and a half hours doing my work.(改同义句) THREE AND A HALF怎么样 three-and-a-half billion two and a half hours这种结构的构成 one and a half hours 的同义词组 "two and a half hours" 有什么相同的句子? one and a half hours 和 one hour and a half的意思一样吗 one and a half hours 还是hour two and a half hours' walk可不可以说two hours and a half's walk