1. 通货紧缩
Deflation is a reduction in economic activity that leads to lower levels of industrial output, employment, investment, trade, profits, and prices.

1. the act of letting the air out of something

2. a contraction of economic activity resulting in a decline of prices

3. (geology) the erosion of soil as a consequence of sand and dust and loose rocks being removed by the wind

e.g. a constant deflation of the desert landscape