Agents of production
[经] 生产要素
🧩 词语组成解析
n. 间谍；代理人；代理商；特工人员（agent的复数形式）
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];
🗣️ 情景例句
But I'm still a little worried about you, Ellen.
但我还是有点牵挂着你， Ellen。
Friends are lost by calling often and calling seldom.
交往过密过疏，都会失去朋友。
and he estimated that there were more than 2,250,000 in one acre;
他估计每英亩草坪里有225万多只蜘蛛。