四、請將下列對話翻繹成中文(20%)
Dialogue 1 Application for stopping the main engine
B: Excuse me, sir. May I stop the main engine right now?
A: What's the matter?
B: A fire occurred in the scavenge air box. I have to stop the main engine.
A: How long will it take?
B: About one hour.
A: Yes, I see. Put the fire out as quickly as possible.
B: Thank you, sir.

Dialogue 2 Taking over the freshwater generator
A: How much water can it produce a day?
B: Its designed capacity is 29 tons, but it can't distill so much at present.
A: What's the matter? How much can it produce?
B: Only 20 tons. I think it's due to the scale and air leakage.

Dialogue 3 Parallel operation
A: Please show me where the main switchboard is.
B: This way, please.
A: First of all, please tell me the functions of meters and switches.
B: All right.
A: Could you show me the parallel operation?
B: Regulate the voltage and frequency first. Then watch the synchroscope. While the pointer is running slowly clockwise, turn on the breaker when the pointer is at 11.
A: All right.
B: Anything else?
A: No, thank you.