"立桩标出" can be translated into English as "mark out with stakes" or simply "stake out".
"Mark out with stakes" emphasizes the action of using stakes to clearly indicate or delineate a specific area, boundary, or point.
"Stake out" is a more concise expression that also conveys the idea of marking or indicating a location with stakes, often used in contexts like surveying, construction, or outdoor activities where boundaries need to be clearly defined.