Elevation and subsidence

• 升降

Elevation and subsidence的用法和样例：

例句

1. Ma Tui is ferroguinous, may rise and fall.
   马腿是铁质的，可升降。
2. Window cleaners are pulled up and down tall buildings on cradles.
   窗户清洁工乘坐能升降的吊篮清洗高层建筑物的窗子。