irretrievable

adj.

不能挽回的，不能复原的；不可弥补；不可挽回；

1. The money already paid is irretrievable.
   已经支付的钱是无法收回的。
2. The breakdown of their marriage was irretrievable .
   他俩婚姻破裂
3. When the diamond fell into the lake, it was virtually irretrievable.
   当钻石掉进湖中后，实际已无法取回来了
4. Usually, the analytes are irretrievable.
   通常，这被分析物不可复原。

Biliary endoprostheses in elderly patients with endoscopically irretrievable common bile duct stones: Report on 117 patients
Blunt tibial artery trauma: predicting the irretrievable extremity
Endoscopic stenting for definitive treatment of irretrievable common bile duct calculi. A long-term follow-up study of 49 patients
Method and device for making information contents of a volatile semiconductor memory irretrievable
Stenting or surgery for treatment of irretrievable common bile duct calculi in elderly patients?
Irretrievable screw
A simple method to retrieve irretrievable epidural catheters
Aral Sea; irretrievable loss or Irtysh imports?
Totally autogenous venovenous composite bypass grafts. Salvage of the almost irretrievable extremity
Endoscopic biliary stenting for irretrievable common bile duct stones: Indications, advantages, disadvantages, and follow-up results.