a criminal case that has not been solved for a long time
長期間解決されていない犯罪事件 (chō kikan kaiketsu sarete inai hanzai jiken)
"The detective reopened a cold case from 1999."
"探偵は1999年のコールドケースを再開した。" (Tantei wa 1999 nen no **kōrudo kēsu** o saikai shita.)
unfortunate or unlucky situation
something that is still being developed or improved
to start behaving in an unusual or uncontrolled way
a cyber attack that redirects a website’s traffic to a fraud...
to spend time doing casual activities
An event with worldwide significance or impact.
