ballast
翻译
压舱物, 道碴, 镇流器
例句
The ship took on ballast to improve stability.
船只装上压舱物以提高稳定性。
Gravel is used as ballast for railway tracks.
碎石被用作铁路轨道的道碴。
语法模式
((as sth.)) 作为压舱物/道碴 Gravel is used as ballast for railway tracks.
近义词
同义词: weight, counterweight, stabilizer
词源
源自中世纪低地德语,可能与意为“纯粹的负载”的“bare last”有关。
记忆技巧
想象一个热气球(ball)在最后一刻(last)需要重物来保持稳定。