Ballast
[ 'bæləst ]
辅助 Assistant
n. 压舱物，压载物;道渣，碎石;镇流器;<比喻>沉着;
vt. 给某物装上压舱物;给…铺道渣;使稳定;使沉着;
📝 例句
Arc lamps require a current-limiting ballast.
弧光灯需要一个限流镇流器。
The ballast may be thrown out to make the balloon go higher.
沙袋可以抛掉以使气球飞得更高。
bilge ballast pump
船底压载水泵
He furnished psychological ballast to a desperate President.
他给一位在绝望中挣扎的总统提供了心理镇定剂。
The rails of the two tracks are supported on wooden ties resting on a ballast.
两条线路的钢轨放置在有道碴承托的枕木上。
🌱 联想助记
【记】※ bal-ball球,last-最后的:最后一个球形压舱物
※ bal-ball球,last-最后的:装棉花的船太轻所以最后放上铅球作为压舱物
✅ 同义词
📖 牛津释义
ballast
n
1 [U] heavy material placed in a ship's hold to keep it steady 压舱物, 压载物（船中用以保持平稳的）.
2 [U] sand or other material carried in a balloon, that can be thrown out to make the balloon go higher 气球所装载的沙子或其他物质（可将其抛掉以使气球升得更高）.
3 [U] stones, etc used to make a foundation for a railway, road, etc （铺筑铁路、公路等之路基所用的）石块, 道渣.
4 [C] device used for stabilizing current in an electric circuit 镇流器.
5 (idm 习语) in ballast (of a ship) carrying only ballast （指船）仅装有压舱物的. ballast, v [Tn, Tn.pr]
~ sth (with sth) supply sth with ballast 给某物装上压载物.
🔁 扩展释义
*['bælәst]n. 压载物, 压舱物【经】 底货, 压舱货
🏥 医学释义
①镇流器 ②平衡器
📖 同为「GRE」词汇
查看全部GRE词汇 ›🗣️ 情景例句
Would you like to call home?
你想跟家里通个电话吗？
Karl was so upset that he began to turn red with anger.
卡尔非常惊讶，红着脸开始生气了。
Every day you can have one apple, one orange, one piece of dry bread, and a glass of water.
你每天可以吃一个苹果，一个桔子，一块面包，还有一杯水。