ballast
UK/'bælәst/US
GREC1
Definitions
n.
Heavy material placed in a ship or balloon for stability; gravel used as a bed for roads or railways
压舱物；道碴，碎石
v.
To stabilize a ship or vehicle with ballast; to weigh down
用压舱物稳定；加重
Root Breakdown
Native Englishballastother
=ballast
Example Sentences
- 1.
The ballast inside the submarine ensured stability during deep ocean navigation.
- 2.
Heavy ballast kept the hot air balloon level and properly balanced.