They are only good enough to light a fire with.

它们只够用来生火。

'So light a fire!' Harry choked.

“那么就点火烧它！”哈利几乎要窒息了。

It's cold in the room. Let's light a fire.

房间里太冷了，咱们把火生起来吧。

SCARLETT:Stop it! Go light a fire on the stove.

斯佳丽：别说了！去给炉子生火。

Engage them during adolescence, and you light a fire.

青春期时触及了它们，就等于点燃了一团火。