Irretraceable
a. 不能回头的, 不能再找到的
🗣️ 情景例句
His house is on the left.
他的房子就在左边。
The spacecraft is scheduled to arrive at Saturn next year.
太空船预定明年到达土星。
Without something of this kind, searching for intelligences on other planets
没有这种手段，要想寻觅其他星球上的智力生命，