There are a lot of(=lots of ) apple trees on both sides of the river.
There are a lot of(=lots of ) apple trees on each side of the river.
There are a lot of(=lots of ) apple trees on either side of the river.
许多:a lot of/ lots of ,many,a great many
There are a lot of(=lots of ) apple trees on both sides of the river.
There are a lot of(=lots of ) apple trees on each side of the river.
There are a lot of(=lots of ) apple trees on either side of the river.
许多:a lot of/ lots of ,many,a great many