例句與造句

1. Oil pressure is provided by the trochoidal pump, driven by a steel spur gear off the crankshaft . The main bearings, crank pins, transmission main shaft, clutch bushing, shifter fork guide bar, and rocker arms are lubricated by pressurized oil, whereas the rest of the engine is lubricated by  oil splash . 
2. It's difficult to find fork guide in a sentence. 用fork guide造句挺難的