when the Ethiopian changes his skin的用法和樣例：
例句
- Blameless people are always the most exasperating.
永遠不錯的人總是最叫人生氣的。 - 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.
就像一個(gè)滅火器，你希望你永遠不再需要它，但當你需要絞車(chē)出一個(gè)棘手的情況下，您不想懷疑您的選擇。
