The tissue and cartilage of a nose are too soft to fossilize.

　　鼻部的組織和軟骨結(jié)構(gòu)太軟，無(wú)法形成化石。

　　Tissue that is removed during the operation is checked for signs of malignancy.

　　手術(shù)過(guò)程中切除的組織用于診斷疾病是否為惡性。

　　Once gangrene has developed, the tissue is dead, and the only hope is to contain the damage.

　　一旦出現(xiàn)壞疽，組織就會(huì)壞死，那么惟一的希望就是抑制其損害。