动词筋疲力竭

1. 筋疲力竭：burn into 烧进 | burn itself out 筋疲力竭 | burn like a house on fire 烧得极猛烈

2. 烧尽; 烧完：burn into (酸类)侵蚀 留下不可磨灭的印象 烧上, 烙上; 留下 | burn itself out 烧尽; 烧完 | burn itself away 烧尽; 烧完

6. burn itself out什么意思