绿灯

• ピンイン: lǜ dēng
• 漢字の分解: 绿 = 纟 + 录 (green colour); 灯 = 火 + 丁 (lamp, light)

意味

青信号；（比喩）許可・ゴーサイン

开绿灯 (to give the green light/grant special permission) is a very common idiom in business, government, and everyday contexts, often implying preferential treatment. The metaphor is identical to English usage.

例文

1. 路口的信号灯刚变成绿灯，等待已久的车辆便纷纷加速驶出。
2. 市政府为这个大型招商项目开了绿灯，审批程序得以大幅简化。
3. 在绿灯亮起前擅自起步是一种危险的违规行为，容易引发交通事故。

使い方ガイド

場面: traffic, business, government, everyday

トーン: neutral

正しい言い方

• 相关部门为这家科技公司的上市申请开了绿灯，审批工作将加速推进。(The relevant authorities gave the green light to this technology company's listing application, and the approval process will be expedited.)
• 绿灯亮起后，行人可安全通过斑马线，但仍需注意转弯车辆。(When the green light comes on, pedestrians may safely cross at the zebra crossing, but should still be mindful of turning vehicles.)

避ける言い方

• 将绿灯误写为绿登 — 绿灯 uses 灯 (lamp/light), not 登 (to climb/register); the two characters have entirely different meanings despite similar sounds

起源と歴史

绿 (green) + 灯 (lamp/light) — a green-coloured traffic or signal light

文化的背景

世代: All ages

社会的背景: Universal