They are a stealing and a silent refreshment that we perhaps do not think about which goes on all time 它们潜移默化，润物无声，无处不在，无时不有，只不过不被我们所关注罢了。
6.
They are a stealing and a silent refreshment that we perhaps do not think about but which goes on all the time 他们是一种潜移默化的不断更新，虽然我们也许从未考虑到，但这种变化却一直在进行着。
