例句與造句

1. He coated the hull in cement, added two collapsible masts, fixed the deck and installed the cabin.
2. The two dried out cypress whaleboats " Faith " and " Hope " were strengthened where possible with oak, fit with collapsible masts, and covered by stretched canvas.
3. It's difficult to find collapsible mast in a sentence. 用collapsible mast造句挺難的