Sometimes there are up to as many as one hundred birds singing in this tree.
up to 多达
as many as 一样多,100只一样多,就是一百只
Sometimes there are as more as 100 birds singing in the tree.
There are as many as 100 birds singing in the tree sometimes
Sometimes, there are as many as one hundred birds singing in the tree.
Sometimes, there are as many as 100 birds singing in the tree