Origin of species
[医] 物种起源
🧩 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];
🗣️ 情景例句
He says he'll get up at six tomorrow morning, but he'll never make it.
他说他明天早上要6点起床，但他是绝对做不到的。
Have you heard the weather forecast?
你听天气预报了吗？
He uses a lift to go up and down.
他乘电梯上上下下。