Untraceable
a. 难追踪的, 难以发现的, 难以描绘的, 难以摹写的
🗣️ 情景例句
Good luck!
祝你好运
No matter what she says, don't show you are afraid.
不论她说什么，你也不要让人知道你害怕了。
It may also be said that rational, industrious,useful.
也可以这样说，理智的、勤劳的、有用的。