Undetermined boundary
[法] 未定边界
🧩 词语组成解析
a. 未经决定的, 未确定的, 性质未明的, 形式未定的, 缺乏决断力的\\n[计] 未定的
🗣️ 情景例句
I should have saved some money.
我早该存些钱。
All our work was in vain.
我们白干了一场。
although what impression any other civilization would thus get from us is best left unsaid.
至于其他文明行星对我们地球会有什么印象，还是不说为好。