adj.定相的;
例句:
The machine has been phased out.
这种机器早已过时了.
The use of lead-free petrol is now being phased in.
无铅汽油的应用现正逐步推广.
The old machinery in this factory will be phased out sooner or later.
这家工厂的旧机器迟早将被淘汰.