As suspected, leptin and melanocortin are turning out to be just the tip of the iceberg.一如科学家的怀疑瘦蛋白和黑素皮质素只不过是冰山一角

turn out to be:结果是；原来是；证实是

The man turned out to be a marvelous orator.

那人成了一位优秀的演说者。

It can turn out to be a tremendous burden.

变成一个沉重的负担。

In terms of drug treatments for obesity,在肥胖的药物治疗方面

in terms of:在 ... 方面

It is difficult to express it in terms of science.

要用科学的字眼来表达它是很困难的。

He often talks about his girlfriend in terms of love.

他经常用充满爱意的语言谈论他的女朋友。

Such as the melanocortins, the neuromedins...比如说黑素皮质素,神经调节肽

such as:例如；诸如

I know many of them, such as John, Peter, and Tom.

我认识他们当中的很多人，例如约翰、彼得和汤姆。

相关短语:

such as to达到这样的程度以致

Her madness is not such as to fill her mother with despair.

她还没有疯到令其母亲绝望的程度。

such as it is不过如此

This pudding,such as it is,is the best I can make.

布丁只能做成这样了，我尽了最大的努力。