机缘巧合之下，一天早上，利兢丝医生发现一只注射了皮质醇的羊羔在晚上生产了。

Then serendipity stepped in. One morning Dr Liggins discovered that a lamb he had infused with cortisol had been born overnight.

youdao

机缘巧合之下，一天早上，利兢丝医生发现一只注射了皮质醇的羊羔在晚上生产了。

Then serendipity stepped in.One morning Dr Liggins discovered that a lamb he had infused with cortisol had been born overnight.

youdao