第1个回答 2011-02-06
around the world 是世界各地的意思,around是介词
根据后面travel 用了过去分词形式可以判断出they'd 是they had的缩写形式
第2个回答 2011-02-06
they had traveled around the world.他们已经周游过全世界。around the world是补语呀,补充说明travel。
第3个回答 2011-02-06
他们周游了世界,They have traveled around the world
第4个回答 2011-02-06
they had traveled around the world.
around the world 环游世界