These raised it a few centimetres over a period of several days, as the lifting frame rose slowly up its four legs.
在几天的时间内，随着升降架的四只脚架慢慢升起，这些东西将它抬高了几厘米。
2
Involvement in sports, in particular, rose almost 50% from 1981 to 1997: boys now spend an average of four hours a week playing sports; girls log half that time.