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
I'm really concerned about them,
我真的为他们担心，
Pat began to feel unhappy about what he had done.
帕特开始对自己所做的事感到悲伤。
Yes, that's right.
是的。