four-fold

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

1. having four units or components
- quadruple rhythm has four beats per measure
- quadruplex wire
• Syn:
quadruple, quadruplicate, quadruplex, fourfold
• Similar to:
multiple
2. four times as great or many
- a fourfold increase in the dosage
• Syn:
quadruple, fourfold
• Similar to:
multiple