top dressing
top-dressing的词性:n.(名词)
1. A covering of loose gravel on a road.表面处理:覆盖地面的松散砾石形成的覆盖面
2. A covering of manure or other fertilizer spread on soil without being plowed under.土表追肥:尚未犁过的土地上面撒满的粪肥或其它肥料形成的覆盖面