ballast
/'bælәst/
★☆☆☆☆GRE英语词汇
📖 中文释义
- n. 压载物, 压舱物
- [经] 底货, 压舱货
🧩 词形变化
📘 English Definition（英文释义）
- n. any heavy material used to stabilize a ship or airship
- n. coarse gravel laid to form a bed for streets and railroads
- n. an attribute that tends to give stability in character and morals; something that steadies the mind or feelings
- n. an electrical device for starting and regulating fluorescent and discharge lamps