a rope or line used for life-saving, typically one thrown to rescue someone in difficulties in water or one used by sailors to secure themselves to a boat 救生索 ■a line used by a diver for sending signals to the surface (潜水员的)信号索 ■(figurative)a thing which is essential for the continued existence of someone or something or which provides a means of escape from a difficult situation (喻)惟一的出路,继续生存所必需的出路;摆脱困境的手段 fertility treatment can seem like a lifeline to childless couples. 对没有孩子的夫妇来说,不孕症的治疗可能是惟一的希望。 ■(Brit.)an emergency telephone counselling service (英)求救电话
(in palmistry) a line on the palm of a person's hand, regarded as indicating how long they will live (手相术中所说的手掌上的)寿命线
常用词组 throw a lifeline to (或 throw someone a lifeline)
provide (someone) with a means of escaping from a difficult situation 向某人提供脱离困境的手段