常見例句Pig iron used as permanent ballast. 壓載鉄做爲永久性壓艙物的生鉄The ship was furnished with ballast. 船上裝了壓艙物。The ride on the roller coaster dizzied us. 乘坐雲霄飛車使我們頭暈。May I borrow your roller skates? 我可以借你的旱冰鞋嗎?The ballast placed in the ship can keep the ship steady. 放在船上的壓艙物可以保持船的平穩(wěn)。Clattering along on roller skates. 踩著輪式霤冰鞋行進 返回 ballast-roller