Nontracking
非跟踪
🗣️ 情景例句
If you're under twenty-one years of age ...
如果你还不到二十一岁……
He who makes no mistakes, makes nothing.
不犯错误，成不了事。
In the pioneering days, however, this was not the case at all.
然而，在登山运动的初期，全然不是这种情况。