Oh, I see , it's like:

"Jim, we have to reduce warp speed now. The dilithium [Li2] crystals are overheating, they can't take any more. They'll blow any sccond!"

"Scotty, we have to increase power, the Vegans [or is it "Vogons"?] are about to recite poetry at us. It's poetry or death Scotty! Maximum Warp pluss 75% Mr Sulu!"