The earlier group enjoyed a high degree of mobility but the later one was less fortunate, suggesting that movement between income groups is slowingdown.
前一组人有很高的流动性，而后一组人则没有那么幸运。这说明，不伺收人人群之间的流动正在减慢。
2
Many travellers are now on their second or third visit to Europe: group Tours are duly slowingdown and stopping to savour local culture.
很多游客现在都是第二次或第三次到欧洲旅行了。
3
Until now, there is no practical optical buffer. In our case, we try to realize data storage or packet synchronization by slowingdown the group velocity of light.