一度

• ピンイン: yī dù
• 漢字の分解: 一 = single horizontal stroke (one); 度 = 广 + 廿 + 又 (shelter/roof + twenty + hand — originally measuring length by hand spans, extended to degree/measure/occasion/time)

意味

かつては／一時は

Functions as a temporal adverb. It marks a past state or condition that no longer holds, adding a retrospective, often reflective or ironic tone. Contrasted with 曾经 (which simply means 'once/in the past') — 一度 more specifically emphasises the temporary or transitional nature of the past state.

例文

1. 这家老字号餐厅在二十世纪九十年代一度门庭若市，如今却已人去楼空，只剩招牌在风中摇晃。
2. 由于原材料价格持续上涨，该工厂的利润率一度跌至历史最低点，工人们的工资也随之被迫缩减。
3. 这位学者一度被视为该领域最具创见的思想家，然而随着更多原始档案的解密，其核心论断受到了广泛质疑。

使い方ガイド

場面: history, journalism, academic writing, biography

トーン: reflective

正しい言い方

• 这座城市一度是全国最重要的钢铁基地，如今已转型为以高新技术为主的现代都市。(This city was once the country's most important steel base, and it has now transformed into a modern city led by high-tech industries.)
• 该研究所一度因资金链断裂而面临关闭危机，多亏政府及时注资并引进了三家战略合作企业，才得以重获生机并重组研发团队。(The research institute once faced a closure crisis due to a broken funding chain; it was only through timely government capital injection and the introduction of three strategic partner companies that it was able to regain vitality and restructure its R&D team.)

避ける言い方

• 他一度去过北京 — 一度 marks a state that persisted over a period, not a single completed visit; use 曾经去过 or 去过一次 for a one-time trip; 一度 with a punctual action like visiting once is unidiomatic

起源と歴史

一 (one) + 度 (degree/time/occasion) — literally 'one occasion' or 'one period', evolved to mean 'at a certain point in the past'

文化的背景

時代: Modern

世代: All ages

社会的背景: Universal