Sources of supply
[经] 供应来源, 供货来源
🧩 词语组成解析
n. 输入源；发起者；来源（source的复数）
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
supply
[sə'plaɪ]
vt. 供给;补充;弥补（缺陷、损失等）;向…提供（物资等）;
n. 供给物;储备物质;粮食;
vi. 暂代他人职务;
sup在下面+ply重叠，折叠→重叠下去→供应[下去],补给
🗣️ 情景例句
A dime is 10 cents. It's one tenth of a dollar.
一角有十美分，是一美元的十分之一。
He went to grade school in New york and high school in Cicargo.
他在纽约上小学并在Cicargo上高中。
In the nineteenth century, a novelist would bring his story to a conclusion by presenting his readers with a series of coincidences -- most of them wildly improbable.
在19世纪，小说家常在小说结尾处给读者准备一系列的巧合——大部分是牵强附会，极不可能的。