英语词汇on the beam的起源、历史背景-英语词源词典

on the beam. At first glance to be right on the beam, “to be on the right course, accurate, functioning well,” might be mistaken for an old expression connected with carpentry. The familiar phrase, however, is modern and has nothing to do with beams of wood. It probably originated in the RAF around 1938 and refers to the directional radio beams that guided planes to air- fields. When a pilot is on course, the beam’s signal is loudest; when he strays off course, the signal-from the beacons along the route grows weaker.

词汇	on the beam
词源	on the beam. At first glance to be right on the beam, “to be on the right course, accurate, functioning well,” might be mistaken for an old expression connected with carpentry. The familiar phrase, however, is modern and has nothing to do with beams of wood. It probably originated in the RAF around 1938 and refers to the directional radio beams that guided planes to air- fields. When a pilot is on course, the beam’s signal is loudest; when he strays off course, the signal-from the beacons along the route grows weaker.
随便看	first in war first in peace first in the hearts of his countrymen first lady first name first nations first one must endure first rate etc first string first water fiscal fish-and-chips fishapod fisherman farmer fisherman-s joke fishfall fish in troubled waters fish names from land animals fish or cut bait fish out of water fish royal fishtailing fit as a fiddle fitting fit to be tied five-and-ten five civilized tribes