any heavy material used to stabilize a ship or airship
coarse gravel laid to form a bed for streets and railroads
an attribute that tends to give stability in character and morals; something that steadies the mind or feelings
a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
an electrical device for starting and regulating fluorescent and discharge lamps
Verb:
make steady with a ballast
双语例句
1. We can trust that company; the partners are in ballast all right.
我们可以信任那家公司, 其合伙人都很可靠.
来自《简明英汉词典》
2. He has got no ballast whatever.
他这个人一点也不沉着.
来自《简明英汉词典》
3. Then the sound of rumbling thunder reached the watchers on the shore, as cargo, ballast, ammunition and 400 people went sliding and crashing down to the port side of the steeply listing ship.