source：n.來源;出處;信息來源;原始資料;起源;根源;原因；
vt.(從…)獲得；
第三人稱單數(shù)： sources復(fù)數(shù)： sources現(xiàn)在分詞： sourcing過去式： sourced過去分詞： sourced
例句：
We source all the meat sold in our stores from British farms.
我們商店里賣的肉均從英國農(nóng)場購進。
The threat of losing their jobs is a constant source of worry to them.
丟掉工作的威脅時常使他們憂心忡忡。
Peas, beans and lentils are a good source of vegetable protein.
豌豆、豆莢和扁豆是植物蛋白質(zhì)的大好來源。
Government sources denied there had been a deliberate cover-up.
政府方面否認(rèn)了有故意掩飾的行為。