Was heißt »Ankauf« auf Englisch?

Das Substantiv »Ankauf« lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Deutsch/Englische Beispielübersetzungen

Es wäre gut Bücher kaufen, wenn man die Zeit, sie zu lesen, mitkaufen könnte, aber man verwechselt meistens den Ankauf der Bücher mit dem Aneignen ihres Inhalts.: Buying books would be a good thing if one could also buy the time to read them in: but as a rule the purchase of books is mistaken for the appropriation of their contents.; To buy books would be a good thing if we could also buy the time to read them; as it is, the mere act of purchasing them is often mistaken for the assimilation and mastering of their contents.

You cannot purchase this medicine without a prescription.
That book is not available for purchase.
The money must be paid at the time of purchase.
The company has entered into $70.0 million of material long-term non-cancelable materials and supply purchase obligations.
I'm very happy with my purchase.
Thank you for your purchase!
Did Tom purchase it?
In an ugly and unhappy world the richest man can purchase nothing but ugliness and unhappiness.
You can't purchase this medicine without a prescription.
Please note: tickets are valid for a year after purchase.
Many Americans protested the purchase of Alaska.
The couple wants to purchase a home.
I need to purchase health insurance.
This ticket is valid for only two days after its purchase.
The thermos was a really good purchase.
The vacuum flask was a really good purchase.
This ticket is valid for two days after purchase.
Keeping the suit on, Dima walked out of the changing room and stated that he wanted to make the purchase.
This ticket is valid for two days only after the date of purchase.
They are saving their money for the purchase of a house.