James says: We expect that most of the goannas are going to eat a cane toad.

詹姆斯说：我们预计大多数巨蜥都会吃甘蔗蟾蜍。

He says that if goannas don't eat toads then this will hopefully bring numbers of goannas back up.

他说，如果巨蜥不吃蟾蜍，那么巨蜥的数量有望恢复。