Definition of Jacob's staff in English:

Jacob's staff

noun ˈdʒeɪkəbz

A rod with a sliding cursor formerly used for measuring distances and heights.
（原用于测量距离和高度的）独脚罗盘支杆
Example sentencesExamples
- In January 1472 he made observations of a comet, using his Jacob's staff, which were accurate enough to allow it to be identified with Halley's comet 210 years (and three returns of the 70 year period comet) later.

Origin

Mid 16th century (denoting a pilgrim's staff): alluding to St James (Jacobus in ecclesiastical Latin), whose symbols are a pilgrim's staff and a scallop shell.

Definition of Jacob's staff in US English:

Jacob's staff

noun

A rod with a sliding cursor formerly used for measuring distances and heights, especially in navigation.
（原用于测量距离和高度的）独脚罗盘支杆
Example sentencesExamples
- In January 1472 he made observations of a comet, using his Jacob's staff, which were accurate enough to allow it to be identified with Halley's comet 210 years (and three returns of the 70 year period comet) later.

Origin

Mid 16th century (denoting a pilgrim's staff): alluding to St James ( Jacobus in ecclesiastical Latin), whose symbols are a pilgrim's staff and a scallop shell.

单词	Jacob's staff
释义	Definition of Jacob's staff in English: Jacob's staff noun ˈdʒeɪkəbz A rod with a sliding cursor formerly used for measuring distances and heights. （原用于测量距离和高度的）独脚罗盘支杆 Example sentencesExamples In January 1472 he made observations of a comet, using his Jacob's staff, which were accurate enough to allow it to be identified with Halley's comet 210 years (and three returns of the 70 year period comet) later. Origin Mid 16th century (denoting a pilgrim's staff): alluding to St James (Jacobus in ecclesiastical Latin), whose symbols are a pilgrim's staff and a scallop shell. Definition of Jacob's staff in US English: Jacob's staff noun A rod with a sliding cursor formerly used for measuring distances and heights, especially in navigation. （原用于测量距离和高度的）独脚罗盘支杆 Example sentencesExamples In January 1472 he made observations of a comet, using his Jacob's staff, which were accurate enough to allow it to be identified with Halley's comet 210 years (and three returns of the 70 year period comet) later. Origin Mid 16th century (denoting a pilgrim's staff): alluding to St James ( Jacobus in ecclesiastical Latin), whose symbols are a pilgrim's staff and a scallop shell.
随便看	keep for oneself keep from keep from keep from harm keep from (or keep someone from) keep from (or keep someone from) keep goal keep goal keep going keep going keep going with keep good (or bad) time keep good (or bad) time keep good time keep guard keep guard on keep guard over keep guessing keep hand in keep hands clean keep hanging on keep head keep head above water keep head down keep hidden 为什么烤面包有好闻的香味为什么烧水壶里会结水垢为什么烧肉不加盐就不鲜为什么热带雨林十分重要? 为什么热带雨林在减少? 为什么热带鱼的外表都很漂亮? 为什么热气球能载人升空为什么热水瓶能保温为什么热水瓶能保温? 为什么热液温度高达300～400℃还不沸腾 piepsen piepsend Pier piercen Piercing Pierre Piezoaktuator Piezochemie Piezo_Composite Piezoeffekt