I don't think I ever came across a guide so well posted in his subject, nor — which is rare — so silent.
我想我从来没有遇到过一个在他的主题上如此出色的指南, 也没有——这很少见——如此沉默。
英语百科
Guide Post
Guide Post is a village in south east Northumberland, England, about 17 miles (27km) north of Newcastle upon Tyne. It lies across the River Wansbeck from Ashington, along with Stakeford. About halfway between Ashington and Morpeth, it is situated just north of the village of Choppington. It forms part of the civil parish of North Bedlington, and has a population of 9,350.
英英词典
guide post n.
a rule or principle that provides guidance to appropriate behavior
synonymous: guidepost, guideline, rule of thumb
a post bearing a sign that gives directions or shows the way