Scientists claim that the discovery of the first authenticated mammal bones in amber could provide important clues of determining, in addition to how, when mammals colonized the islands of the West Indies.
of determining, in addition to how, when mammals colonized the islands of the West Indies
in the determination of how and when the islands of the West Indies were colonized by mammals
to determine how mammals colonized the islands of the West Indies and when they did
for determining when the islands of the West Indies were colonized by mammals and how they were
for determining how and when mammals colonized the islands of the West Indies
我认这道题不是在考目的。因为discovery of the first authenticated mammal bones in amber的目的性不是很明显。换句话说， 这个discovery 不是专门为determining how and when mammals 。。。 而做的。它还是强调这个discovery的作用，这一点从could可以看出。
