在倒车时，他没开双跳灯。的翻译：When backing, he didn't open jump lights. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

In reversing, he did not open the double jump lights.

When backing, he didn't open jump lights.

When back-draft, he has not operated the double dancing lantern.

In reversing lamp, he doesn't double-jump.

When backing, he didn't open jump lights.