ballast-roller

常见例句

• 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。
• Clattering along on roller skates.
  踩著輪式霤冰鞋行進
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