Was heißt »purzeln« auf Englisch?

Das Verb purzeln lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Deutsch/Englische Beispielübersetzungen

Im Winterschlussverkauf purzeln die Preise.: Prices drop in the winter clearance sales.
Tom ließ ein paar Pillen aus einem Arzneifläschchen purzeln und in seinem Mund verschwinden.: Tom poured out a couple of pills from the medicine bottle and popped them into his mouth.

Please drop in to see us next time you come to Boston.
You're drop dead gorgeous.
The rise and fall of the tides play an important role in the natural world.
Do not prune roses in the fall.
Did you fall asleep?
If I stayed up all night studying, I'd probably fall asleep during the test.
I can't fall asleep with my bladder full.
I went to bed, but I couldn't fall asleep.
Tom and Mary watched the snowflakes fall.
Tom and Mary sat by the window watching the snow fall down.
I was very tired, so I was able to fall asleep straight away.
Why must all men fall in love with me? I don't want that.
Life is too short to be afraid to fall in love.
While the Coliseum stands, Rome shall stand; when the Coliseum falls, Rome shall fall; when Rome falls, the world shall fall.
People fall in love every day.
Be like a tree and let the dead leaves fall.
I still can't fall asleep.
I'm going to Australia in the fall.
One drop makes the glass overflow.
I fall in love too easily.