movable scale

• 活动标尺

movable scale的用法和样例：

例句

1. These are the scale models he has crafted.
   这些是他精制的标尺模型。
2. At the other end of the scale, Johannesburg replaced Blantyre, Malawi as the cheapest city on the planet.
   在标尺的另一端，约翰内斯堡取代马拉维的布兰太尔而成了地球上最低廉的城市。