ballast

/ˈbæləst/📚 15367 1
Ballast is any substance that is used in ships or hot-air balloons to make them heavier and more stable. Ballast usually consists of water, sand, or iron. 压舱物

noun [专属名词]压舱物,[建]压载物;道渣,碎石

A "global ballast partnership" hopes to reduce this risk.
一份名为“全球压舱物伙伴”的协议便是旨在减少这种风险。

verb [vt. 及物动词]vt. 给……装压舱物;给……铺道渣

Ballast water is carried in cargo ships to provide needed stability.
压载水由货船装载,以提供必要的稳定性。

ballast 出现在下面的课文中(提供视频、音频及笔记等可系统性学习)
Lesson 27 The 'Vasa' ballast 名词: 压舱物
单词造句:
网友用“Ballast”造句精选
The idea is to kill the organisms in the water before the ballast is released. 这套方案的目的是在排放压舱水杀死其中的生物。