Leptin
n. 瘦蛋白
🗣️ 情景例句
Would you please hand me your customs declaration form?
请出示您的申报表给我？
What were you doing when I called you on the telephone?
当我打电话给了你时，你正在做什么？
The officer in the control tower was very angry when he heard the news,
控制塔上的官员得知这一消息后，非常气愤，