在这些情况下，用户沿搜索线索跟踪的能力会直接影响到信息系统的可用性。
In these cases, information-system usability is directly influenced by a user's ability to track along a search trail.
警察彻底搜索了那个地区以寻找线索。
慌乱的交易员疯狂地寻找答案，搜索交易纪录以便找到股市大跌成因的线索。
Unnerved traders frantically searched for an explanation, scouring the trade blotters for clues to the cause.
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