1. 标杆：signofoperation 运算符号 | signpost 标杆 | signpulse 符号脉冲

2. 标志杆：signposition符号位置 | signpost标志杆 | signpro标记药名

1. 路标;道路指示牌
    A signpost is a sign where roads meet that tells you which direction to go in to reach a particular place or different places.

    e.g. The lights of the car lit up a signpost...
           车灯照亮了路标。
    e.g. Turn off at the signpost for Attlebridge.
           在路标处拐弯去往阿特尔桥。

2. 线索;征兆
    A signpost is something that helps you to know how a situation or a course of action will develop.

    e.g. The outcome of tomorrow''s elections will be studied carefully as a signpost of voter intentions on the really big day this year...
           明天的选举结果会被作为今年大选的选民意愿风向标来仔细研究。
    e.g. These events were all signposts pointing toward change.
           这些事件都是将要进行变革的征兆。

1. a post bearing a sign that gives directions or shows the way

    Synonym: guidepost

1. mark with a signpost, as of a path