displacement

強制移住、移動

人や物が普段の場所から移されること。強制される場合が多い。

やさしい英語で： The movement of people or things away from their usual place, often by force.

• The war caused widespread displacement.
• Displacement has separated many families from their neighbours.
• The survey measured the displacement of stones after the earthquake.

使い方： displacement of someone/something (The flood caused the displacement of many families.)

類義語： removal, relocation

よく使う表現： forced displacement, displacement of people, mass displacement

排水量

物を液体に入れたとき、その物が押しのける液体の量。

やさしい英語で： The amount of liquid pushed aside when an object is put into it.

• We measured the water displacement.
• The ship has a displacement of twenty thousand tonnes.
• Use displacement to find the volume of this stone.

よく使う表現： water displacement, liquid displacement, displacement of water

変位

物の出発点から最終位置までの距離と方向。

やさしい英語で： The distance and direction from an object's starting position to its ending position.

• The displacement was three metres east.
• Calculate the displacement from the starting point.
• After one complete lap, her displacement was zero.

よく使う表現： net displacement, displacement vector, zero displacement