兴趣盎然

ràng tā xìng qù àng rán de dào bù shì nà kuài shān hú ér shì nà bō li de nèi bù

让他兴趣盎然的，倒不是那块珊瑚，而是那玻璃的内部。

The inexhaustibly interesting thing for him was not the fragment of coral but the interior of the glass itself.