这些干燥的松针是很好的引火物。

These dry pine needles make excellent ___tinder for starting a fire.

他在Tinder上认识了很多有趣的人。

He met many interesting people on ___Tinder.

他的挑衅言论就像是点燃愤怒的火种。

His provocative words were like ___tinder for anger.