But China later said it could not confirm the objects belonged to the missing aircraft.

但是随后中国表示不能证实这些物体属于失踪客机。

Rule things like that out — and in terms of ruling something in — specifically, tying this piece of debris to the missing aircraft — how do they do that?

排除这种情况，那考虑一件事，尤其是在将这块残骸同失联飞机联系起来这方面，他们会怎么做？

An Air Algerie plane with 116 people on board has crashed in northern Mali. Reports suggest wreckage has been found, but it is not clear if this is from the missing aircraft.

一架载着116人的阿尔及利亚航空公司飞机在马里北部坠毁，报道称已发现飞机残骸，但尚不清楚是否就是失踪飞机的。