keel arch

常见例句

• To arch upwardin the middle.Used of a ship's keel.
  中部拱起。用於指船的龍骨。
• To arch upward in the middle.Used of a ship's keel.
  中部拱起。用於指船的龍骨
• The workers are laying a keel of the ship.
  工人正在給那艘船安龍骨。
• The arch has a span of 60 metres.
  那個拱的跨度爲60米。
• The boy walks through the undecorated arch.
  那男孩走過未經裝飾的拱門。
• The keel of the boat was made of steel.
  這船的龍骨是鋼制的。
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