1.concentrate vt.& vi.专心于;注意
We must concentrate our energies on treating addiction first.
我们必须首先集中精力治疗毒瘾 。
2.relocate vt.& vi.迁移;重新安置
If the company was to relocate, most employees would move.
如果这个公司要搬迁,多数员工也要搬家 。
3.outdoors n.户外;露天;野外
Life in the great outdoors isn't supposed to be luxurious.
美好的户外活动不必很奢侈 。
4.urban adj.都市的
The government is spending billions of dollars on new urban rail projects.
政府正把数十亿元花在新城市铁路项目上 。