when the Ethiopian changes his skin

• 等到埃赛俄比亚人皮肤变色,永远不会

when the Ethiopian changes his skin的用法和样例：

例句

1. Blameless people are always the most exasperating.
   永远不错的人总是最叫人生气的。
2. Like a fire extinguisher, you hope you never need it but when you do need to winch out of a sticky situation, you don't want to doubt the choices you made.
   就像一个灭火器，你希望你永远不再需要它，但当你需要绞车出一个棘手的情况下，您不想怀疑您的选择。