她购买了一份人寿保险，以确保孩子们在她意外离世后能有经济保障。

She bought a ___life assurance policy to secure financial protection for her children in case of her unexpected death.

他购买人寿保险是为了在意外发生时保障家人的经济安全。

He bought ___life assurance to secure his family's financial future in case of an unexpected event.