un·writ·ten
adjective/ˌʌnˈrɪtn/
/ˌʌnˈrɪtn/
- unwritten law, rule, agreement, etc. a law, etc. that everyone knows about and accepts even though it has not been made official
非书面的，不成文的，惯常的（法律、规定、协议等） - an unwritten understanding that nobody leaves before five o’clock
五点钟之前谁都不离开的默契
- an unwritten understanding that nobody leaves before five o’clock
- (of a book, etc.) not yet written
未写的；未写完的 - The photographs were to be included in his as yet unwritten autobiography.
这些照片准备要收入他那尚未写的自传之中。
- The photographs were to be included in his as yet unwritten autobiography.