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1.half a dozen 六个
He sat behind a table on which were half a dozen files.
他坐在一张放有6个文件夹的桌子后面。
2.sign up 签约
He saw the song's potential, and persuaded the company to sign her up.
他看到了这首歌的潜力，就说服公司和她签约。
3.come as 出现
It may come as a surprise to some that a normal, healthy child is born with many skills
一个身体健康正常的小孩天生就会许多技能，这或许会令有些人感到惊奇。
4.contribute to 有助于
I believe that each of us can contribute to the future of the world
我相信我们每一个人都能够对世界的未来有所贡献。
5.come into 进入
I had hardly come into the room when it began to rain.
我刚进屋就下雨了。
