同根派生 back firing相關(guān)詞英漢例句If the engine backfires, the sudden pressure in the intake manifold forces the valve back.如果發(fā)動(dòng)機(jī)回火，進(jìn)氣歧管驟增的壓力就迫使閥門向后移動(dòng)。back firing更多例句