A standard one. Replacement during the first year if all rules for proper use have been followed.
有一个原则,如果在一年内符合各种使用规定,就可更换。
Then in 1989, twenty-six years after the crash, the plane was accidentally rediscovered in an aerial survey of the island.
于是,到了1989年,飞机失事26年后,在对小岛的一次航空勘查中那架飞机被意外地发现了。