1.falling off 减少；降落
例句:The number of students has been falling off recently.
近来学生数目越来越少了。
2.Wait a second 等一下
例句:Can you wait a second, please?
请你稍等一会儿，可以吗？
3.salvage yard 修理厂；废铁场
例句:The white pot is one I made, and the tile, which I love, is from a salvage yard in Glasgow.
蓝白相间的砖头来自格拉斯哥的一个废旧物品丢弃点。
4.pick up 捡起；获得
例句:Rawlings had been picked up by police at his office
罗林斯已在办公室遭警察拘捕。
