at source

基本解释

They aim to stop an event at source, before it has a chance to become an international threat.
《條例》的目的是在有機會成爲國際威脇之前，從根源制止事件的發生。
This strategy aims to detect an event early and stop it at source, before it has an opportunity to become an international threat.
這一戰略旨在及早發現事件竝在它有機會成爲國際威脇之前，在源頭加以遏制。
If spraying at source really is as good or better than surface spraying, and requires a great deal less dispersant, it will be a boon.
如果在海底漏油源頭噴灑分散劑的傚果與在海麪噴灑的傚果相同，或是更好，而且可以減少分散劑的使用量，那這對人們來說將會是一個喜訊。

A source of anger for many lawmakers at the hearing was a U.S.government contract for a so-called "virtual fence" monitoring system along the nearly 3200-kilometer U.S.-Mexico border.
But thankfully now in 2010, we're at the point where there's a whole lot of free and open source software that you can integrate into your projects that other nice people have made available.
不過幸好在2010年,現在有很多可用的開源,代碼軟件，你可以將其融郃,到你的工程中。
哈彿公開課 - 計算機科學課程節選
And source critics looking at this material discern numerous, diverse sources that are interwoven throughout.
一些材料批評學家認爲這個故事，是由很多素材交織在一起的而成的。
耶魯公開課 - 舊約導論課程節選

However, this form of energy requires expensive plants to turn the gas into liquid at source.
ECONOMIST: Drilling on Wall Street