China announced exceptions to its 25-year ban on the use of tiger bones and rhino horns.

中国宣布解除25年来禁止在特殊情况下使用虎骨和犀牛角（科研、医疗）的禁令。

One of these is to throw a tiger's bone into a pool where a dragon lives.

其中方法之一是将虎骨扔进龙所居住的水潭中。

If you don't have any tiger bones, you can also try throwing your garbage into the dragon pool.

如果你没有虎骨，你也可以尝试把垃圾扔进龙潭。

And they are killed because tiger bones are used in traditional Chinese medicine, and hunters want their teeth and claws for trophies.

而他们之所以被杀，是因为虎骨入药，猎人要虎牙和虎爪作为战利品。