ground motion的用法和樣例：
例句
- Everything in the universe is in constant motion.
宇宙中的萬物都在不斷地運動。 - The effects of sediment on the hydrodynamic pressures acting on rigid dams during vertical ground motion were studied By use of an explicit finite element scheme in this paper.
作者應用時域顯式有限元模型分析了可壓縮庫水條件下淤積泥砂對垂直地運動作用時剛性壩面上動壓力的影響。
