The North's critical dependence on China suggests the Chinese are not that worried about Pyongyang's move to bulk up their Russian ties. (NEWSWEEK)
Adding four chapters will bulk up the book
Use extra vegetables to bulk up the omelette.
Tyson had bulked up to 220 pounds using weights.
renewable energy has accounted for the bulk of recent growth in electric generating capacity
to bulk up or to bulk out: If someone or something bulks up or bulks out, or if you bulk something up or out, se hacen mas grandes o mas pesados. Incrermentarse o provocar un incremento en tamaño o importancia. || la mayor parte de, el grueso de