1 PHRASAL VERB （一系列事件）导致，致使，引致 The events that led up to a particular event happened one after the other until that event occurred. （一系列事件）导致，致使，引致
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Alan Tomlinson has reconstructed the events that led up to the deaths. [VERB PREP. PREP. noun]
艾伦·汤姆林森再现了导致多人死亡的一系列事件。
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They had a series of arguments, leading up to a decision to separate. [VERB PREP. PREP. noun]
他们经过连番争吵后决定分居。
3 PHRASAL VERB [usually cont] （时间）临近，紧挨在…之前 The period of time leading up to an event is the period of time immediately before it happens. （时间）临近，紧挨在…之前
4 PHRASAL VERB （把谈话）引向（某个话题） If someone leads up to a particular subject, they gradually guide a conversation to a point where they can introduce it. （把谈话）引向（某个话题）
SYN introduce, approach, prepare for, intimate