尾气

• ピンイン: wěi qì
• 漢字の分解: 尾 = 尸 (person crouching) + 毛 (hair/tail) — tail, end; 气 = pictograph of rising vapour — gas, air

意味

排気ガス（車の排気）

尾气 primarily refers to vehicle exhaust fumes, which are a major source of urban air pollution in China. 汽车尾气 (car exhaust), 尾气排放 (exhaust emissions), 尾气污染 (exhaust pollution), 尾气检测 (exhaust emissions testing). A central term in discussions of air quality, smog (雾霾), and environmental regulation. The push to electrify transport is explicitly framed as a way to reduce 尾气排放.

例文

1. 城区道路上密集的车流使汽车尾气成为雾霾天气的重要成因之一。
2. 政府规定所有机动车辆须每年接受尾气排放检测，不达标者不得继续上路行驶。
3. 大力推广新能源汽车的核心目标之一，就是从源头上减少城市中的尾气污染。

使い方ガイド

場面: environment, traffic, health, policy

トーン: neutral

正しい言い方

• 长期暴露在高浓度尾气中对呼吸系统的损害是不可逆的。(Long-term exposure to high concentrations of exhaust fumes causes irreversible damage to the respiratory system.)
• 新型催化转化器能将发动机尾气中的有毒成分大幅削减。(New-generation catalytic converters can significantly cut the toxic components in engine exhaust.)

避ける言い方

• 将尾气与废气混淆 — 尾气 specifically refers to exhaust from vehicle/engine combustion; 废气 is the broader term for any waste gas or industrial exhaust emissions

起源と歴史

Compound of 尾 (tail, end — 尸 person crouching + 毛 hair/tail) + 气 (gas, vapour, air — pictograph of rising steam). Together: the gas expelled from the tail/exhaust — the efflux of combustion.

文化的背景

世代: All ages

社会的背景: Universal