ballast
Definition
Heavy material used to stabilize a ship or vehicle; anything that provides stability or balance.
日本語 船や車両の安定を確保するために使う、重い物質; 安定やバランスを与えるもの
Example
"The train uses ballast to keep the tracks firmly in place."
Heavy material used to stabilize a ship or vehicle; anything that provides stability or balance.
日本語 船や車両の安定を確保するために使う、重い物質; 安定やバランスを与えるもの
"The train uses ballast to keep the tracks firmly in place."