B: I know what love is.

乙：我知道爱情是什么。

youdao

That's love, or I don't know what love is.

否则我就不知道爱情究竟是什么了。

youdao

I am not smart, but I know what love is.

我不聪明，但我知道什么是爱情。

youdao

I'm not a smart man, but I know what love is.

VOA: standard.other

Forrest... You don't know what love is.

VOA: standard.other

Since the hurricane, Jordan has worked with his family and released the album You Don't Know What Love Is, featuring his sister, vocalist Stephanie Jordan.

NPR: Marlon Jordan: Summer Vibes In Colorado

So now, unlike Foreigner, you know what love is.

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But not the Twitter I know and love, but what is emerging as the new persnickety purveyor of tweets.

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