1.immigration restrictions 移民限制

例句:Although no one seems to have perceived it, the era of ever increasing immigration restriction had come to an end a dozen years before.
虽然似乎无人察觉到，但是，对移民限制日趋严格的时代已经在十几年前结束了。

2.going down 减少；下降

例句:Small local stores are going down the drain.
当地的小店都倒闭了。

3.focus on 关注；集中于

例句:The talks will focus on economic development of the region.
会谈将着重讨论该地区的经济发展。

4.clear up 清理；打扫

例句:I cleared up my room.
我把我的房间整理了一下。