n.(船中保持平衡的)压舱物，(热气球的)镇重物，(用作公路或铁路路基的)道砟
vt.给某物装上压舱物，给…铺道渣，使稳定，使沉着

原形：ballast第三人称单数：ballasts复数：ballasts过去式：ballasted过去分词：ballasted现在分词：ballasting

The ship's ballast tanks were filled to stabilize it in rough waters.
船上的压载舱被注满水以在波涛汹涌的海面上保持稳定。
The gardener added more ballast to the garden bed to prevent soil erosion.
园丁在花坛里添加了更多的压舱物来防止土壤流失。
A heavy load of ballast prevented the train from derailing during the storm.
重压的压舱物使火车在暴风雨中免于脱轨。
The aircraft's center of gravity was adjusted by adding ballast to the wings.
飞机的重心通过向机翼添加压舱物进行调整。
In construction, ballast stones are commonly used to support railway tracks.
在建筑中，石块常常作为铁路轨道的支撑物。
The weight of the ballast in a spacecraft is crucial for achieving orbit.
宇宙飞船中的压舱物重量对于进入轨道至关重要。
The ship's engineers had to remove excess ballast to lighten the vessel for the journey.
船上的工程师必须移除多余的压舱物以减轻船体重量进行航行。
The old bridge needed new ballast to reinforce its foundation.
这座旧桥需要新的压舱物来加固地基。
The crew carefully calculated the amount of ballast needed to balance the ship's load.
船员们精确计算了压舱物的数量以保持船只负载的平衡。
The use of lightweight ballast materials has become more popular in modern architecture.
轻质压舱材料在现代建筑中越来越受欢迎。