Series of powers
[计] 幂级数
🧩 词语组成解析
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];
n. 权势；力量（power的复数形式）
🗣️ 情景例句
worrying about him.
为他操心。
It's a hard job, but I hope he can make it.
这不是件容易的差事，但我希望他能做到。
But I guess we've got some of the most beautiful mountains and countryside in the world.
但我想我们有一些世界上最美的山脉和乡村。