國家地理國家地理野生國家地理悠人
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  • 極限維修大挑戰 WORLD'S TOUGHEST FIXES

Reassuringly Expensive

Our daring rigger Sean Riley burrows into the bowels of a 767 jet – and learns why aircraft engineers are very careful to save the bolts that hold it together; they’re worth thousands of dollars EACH!!!

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