您要查找的是不是：
- HIV下降HIV drops
- 下降to decline
- 下降的katabatic
- 价格下降price fall
- 急剧下降toboggan
- 下降趋势downtrend
- 下降到drop down to
- 温度下降temperature drop (fall)
- 大幅下降decline to a great extent
- 下降了Fall by
- 你的工作质量有所下降。There has been a slip in the quality of your work.
- 质量下降downgrade
- 下降沿trailing edge
- 同比下降fall
- 股票价格一直趋向下降。Share prices have been trending down.
- 性能下降performance reduction
- （因缺乏实践）质量或标准下降；荒疏Of a poor quality or standard through lack of practice
- 那个地区的大象总数在下降。The elephant population in that area is falling.
- 明显下降dramatic decline
- 直线下降linear decrease
