n. support that enables people to survive or to continue doing something (often by providing an essential connection)
n. line that raises or lowers a deep-sea diver
n. line thrown from a vessel that people can cling to in order to save themselves from drowning
n. 救生索, 生命线
1. The charity provided a lifeline for families in need during the crisis.
在危机期间，这个慈善机构为需要帮助的家庭提供了生命线。
2. During the storm, the radio was our lifeline to the outside world.
在暴风雨中，收音机是我们与外界的生命线。
3. She felt that her friends were her lifeline when she was feeling down.
当她感到沮丧时，她觉得朋友们是她的生命线。