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IV. Directions: Translate the following sentences into Chinese.

1.P art 1 also defines airplane as an engine-driven, fixed-wing aircraft heavier than air that is supported in flight by the dynamic reaction of air against its wings.

2.T here is a fireproof partition between the rear of the engine and the cockpit or cabin to protect the pilot and passengers from accidental engine fires.

3.T he wings are airfoils attached to each side of the fuselage and are the main lifting surfaces that support the airplane in flight.

4.A ilerons extend from about the midpoint of each wing outward toward the tip and move in opposite directions to create aerodynamic forces that cause the airplane to roll.

5.W hen extended, the flaps move simultaneously downward to increase the lifting force of the wing for takeoffs and landings.

6.T he elevator, which is attached to the back

of the horizontal stabilizer, is used to move the nose of the airplane up and down during flight.

7.T he landing gear is the principle support of the airplane when parked, taxiing, taking off, or when landing.

8.T he propeller, mounted on the front of the engine, translates the rotating force of the engine into a forward acting force called thrust that helps move the airplane through the air.

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