Precast concrete and syringe: what they have in common

1. Step 1. Precast concrete — is a kind of — Reinforced concrete. Reinforced concrete.
2. Step 2. Reinforced concrete — is made of — Concrete. Concrete.
3. Step 3. Concrete — is used in — Concrete pump. It pumps concrete.
4. Step 4. Concrete pump — has part — Piston pump. A piston pump.
5. Step 5. Piston pump — works like — Syringe. A syringe is a hand-operated piston pump.

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