保质期

• ピンイン: bǎo zhì qī
• 漢字の分解: 保 = to maintain; 质 = quality; 期 = period

意味

賞味期限／使用期限（保质期）

The period during which a product, especially food or medicine, maintains its quality and safety for consumption. After the 保质期, the product may degrade in quality or become unsafe. Also used figuratively for things that have a limited useful lifespan.

例文

1. 这瓶牛奶保质期只有七天，要尽快喝完。
2. 买东西之前先看看保质期，过期的千万别买。
3. 有人说爱情也有保质期，但我不这么认为。

使い方ガイド

場面: food, shopping, consumer

トーン: practical

正しい言い方

• 保质期到什么时候？(When does it expire?)
• 已经过了保质期了。(It's already past its expiration date.)

避ける言い方

• 对电器说'保质期' (Don't use 保质期 for electronics — use 保修期 for warranty periods instead)

起源と歴史

保质 (to maintain quality) + 期 (period). The period of maintained quality.

文化的背景

世代: All ages

社会的背景: Universal