例句與造句

1. The work was ordered after defective joint seals were found on the shuttle Columbia's rocket boosters.
2. A spokeswoman, Mai Ikezoe, said the defective joint had the potential to cause an accident while the car was under way, but that no accidents due to the defect have been reported.
3. It's difficult to find defective joint in a sentence. 用defective joint造句挺難的