N-COUNT [usually plural] （英国的）“实习”标志（贴于车上以提醒其他驾驶者） In Britain, L-plates are signs with a red 'L' on them which you attach to a car to warn other drivers that you are a learner. （英国的）“实习”标志（贴于车上以提醒其他驾驶者）