Yes. The opposite action is called "buying long".

肯：是的，卖空的相反做法是买空。

youdao

Finally, central Banks can try to circumvent the zero lower bound by buying long-term debt.

最后，央行可以试着通过购买长期债来绕过不能低于零利率的约束。

youdao

Wednesday's FOMC announcement is not expected to generate the fireworks from the March meeting of buying long term Treasuries.

自从宣布3月买入长期债券后，市场并不预期周三FOMC将会有意外政策宣布。

youdao

"For too long, Americans were buying too much, and saving too little .

VOA: standard.2009.09.25

"For too long, we have been buying too much from the rest of the world, when we should be selling more to the rest of the world."

VOA: standard.2010.08.11

But short-selling should not be assisted by regulation any more than buying long should be advantaged.

FORBES: Seven Questions For Week No. 11

To facilitate this, they have been buying long term treasuries at an alarming rate.

FORBES: The Fed, Act II, Scene I: The Art Of Perception!

The trades involved investments to hedge the risks of buying long-term Italian government bonds.

BBC: Banca Monte dei Paschi trades probed in Italy