Train of wheels
[机] 齿轮系
🧩 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. 旋转；车轮（wheel的复数）
🗣️ 情景例句
But I'm thirsty.
可是我渴了。
This woman is washing dishes again.
这个女人又在洗盘子了。
that people have for years assumed that the process of losing vigour with time,
多年来就已认识到。生命力随着时间流失而丧失活力，