ballast
翻譯
壓艙物, 道碴, 鎮流器
例句
The ship took on ballast to improve stability.
船隻裝上壓艙物以提高穩定性。
Gravel is used as ballast for railway tracks.
碎石被用作鐵路軌道的道碴。
文法模式
((as sth.)) 作為壓艙物/道碴 Gravel is used as ballast for railway tracks.
近義詞
同義詞: weight, counterweight, stabilizer
詞源
源自中世紀低地德語，可能與意為「純粹的負載」的「bare last」有關。
記憶技巧
想像一個熱氣球（ball）在最後一刻（last）需要重物來保持穩定。