Water clusters are small groupings of water molecules that differ in many ways from "bulk" water, such as you find in a glass of water.
(Water clusters; are; small groupings of water molecules that differ in many ways from "bulk" water,) (small groupings of water molecules; differ; ) (you; find; L:in a glass of water)
Water clusters small groupings of water molecules you
are differ find
small groupings of water molecules that differ in many ways from "bulk" water,
L:in a glass of water