英汉例句雙語例句In case of fire, the meltdown first occurs in metal welded at low melting points and the decorative slice drops off.儅火災發生時，裝飾片與支架之間的低熔點銲接金屬首先熔化，裝飾片脫落。metal meltdown更多例句词组短语短語contact metal meltdown 觸頭熔銲metal meltdown更多词组