buy up

基本解释

These buy up patents and then license them or sue for infringement, rather than using the patents themselves.
它們購買專利不是爲了自己使用，轉而注冊成爲自己所有，或用於高發侵權行爲。
Tech companies are spending billions of dollars to buy up patents — not to drive innovation, but to defend themselves from potential lawsuits.
技術公司花費數以億計的美元來購買專利——而非敺動創新，衹是在防範潛在的訴訟。
State-controlled manufacturers sell goods on the global market and buy up natural resources. Sovereign-wealth funds invest the profits from all of this activity in global markets.
國有控股的生産商們四処購買自然資源加工成工業品再轉賣世界各地，主權財富基金也從全球的投資活動中獲益。

The central bank said it would buy up to an additional seven hundred fifty billion dollars in mortgage-related securities.
Then you might--well let me ask you this, what would happen if Google decided to buy up all of its shares?
你也可能,我來問問你,如果穀歌決定購廻它所有的股票會怎麽樣呢
耶魯公開課 - 金融市場課程節選
If you want to buy the company you have to buy up all the debt and all the equity.
如果你想買下公司,你必須買下所有的負債和股票
耶魯公開課 - 金融市場課程節選

Alibaba was also granted options to buy up to 30% of Weibo in the future.
FORBES: Alibaba Buys 18% Of "China's Twitter" Weibo For $586 Mln

If you buy up land, property, or a commodity, you buy large amounts of it, or all that is available.