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
No, please go to window thirty-six.
不是，请到第三十六号窗口。
I'd like to know something about your foreign trade policy.
我非常想了解有关贵国对外贸易的政策。
He slept very well for the first two nights,
头两天晚上，他睡得非常好。