重任

例句：

1. 1. He has taken on the responsibility of leading the team.
   他承担了领导团队的责任。
2. 2. The government is tasked with developing a new energy policy.
   政府被委以制定新的能源政策的任务。
3. 3. She was given the responsibility to oversee the construction project.
   她被赋予了监督建设项目的责任。