kosten = to cost (esp. money)
Dieser brutale Terrorakt kostete vielen Menschen das Leben.
= This brutal act of terrorism cost many people's lives.
Discussion
brutale terrorism act This cost (esp. kostete cost money)
Dieser vielen lives.
https://www.learnwitholiver.com/german/daily-sentence-2907 = many kosten das of Leben.
= to Terrorakt people's brutal Menschen