Definition
一发 is an adverb with two distinct uses. One sense means 'even more' or 'to an even greater extent', often used in escalating or comparative contexts (e.g., 一发不可收拾 'get out of hand'). The other sense means 'together' or 'at the same time', as in 一发解决 'solve together'. It is a formal/literary word, common in written Chinese.
adverb
(even) moreto an even greater extenttogetherat the same time
Examples
- 一发。Zhège wèntí yī fā yánzhòng le.This problem has become even more serious.
- 一发。Tāmen yī fā chūfā le.They set off together.
- ，一发。Jīngguò zhè cì péixùn, tā de nénglì yī fā tígāo le.After this training, his ability improved even more.
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