Once and Never Again

For example, a one-time crash, as the name implies, may occur once and never appear again.

例如一次性崩溃(one - time crash)，顾名思义，可能只出现一次，并且不会再次出现。

"This will happen once," Zink said, "and then never again for many, many years."

“这种事情只会发生一次，”津克说，“之后许多年之内都不会再次发生。”

These are people you meet once, have a great time with or are awe-struck by, and then never see again.

这些人你见过一次，拥有美妙的时光或是他们让你肃然起敬，之后便再没有机会遇见。