玛丽是我们的项目协调员，负责确保所有团队按时完成任务。

Mary is our project ___coordinator, making sure all teams finish their tasks on time.

活动协调员安排好了所有志愿者的工作分配。

The event ___coordinator assigned tasks to all the volunteers.

活动协调员负责安排会议时间和地点。

The event ___coordinator is responsible for scheduling meeting times and locations.