一些最高档的酒杯是用铅晶质玻璃制成的。Some of the finest drinking glasses are made from lead crystal.他参与了石油、锌和铅的勘探。He was involved in oil, zinc and lead prospecting.无铅汽油每加仑涨了1分多。Unleaded gasoline rose more than a penny a gallon....
Their fate is still in the melting pot.他们的命运仍然难以预料。It was investigated that chromizing in borax salt bath and melting hydrochloride.研究了硼砂盐浴渗铬和氯系熔盐渗铬.The ice is melting.冰正在融化。The melting ice caused a rise in sea level.冰川消...