"Steal the dragon" is commonly translated as "secure the dragon kill" in Engpsh gaming communities. The term "dragon" refers to a powerful boss monster in many video games, and "securing the dragon kill" means getting the final blow on the dragon, thereby earning rewards for the player's team.
The phrase originated from the video game "League of Legends," where the dragon is a powerful neutral monster located in the jungle. Securing the dragon kill gives the player's team an advantage in the game, which is why it is considered an important play.
Example in Engpsh: "We need to secure the dragon kill before the enemy team gets it."
Example translation in Chinese: "我们需要在敌方队伍之前抢龙。"