Draft pole and turbojet engine: what they have in common

1. Step 1. Draft pole — is part of — Yoke. It transfers the pull to the plough or cart.
2. Step 2. Yoke — is a kind of — Horse collar. A harness for oxen.
3. Step 3. Horse collar — is made of — Leather. The collar and traces are leather.
4. Step 4. Leather — is material for — Prosthetic limb. It was attached with leather straps.
5. Step 5. Prosthetic limb — is made of — Titanium. Titanium parts.
6. Step 6. Titanium — is material for — Turbojet engine. Compressor blades.

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