Ledrite
铅黄铜
🗣️ 情景例句
May I make an appointment now?
现在可以预约门诊吗？
Would you please tell us the price of these electric heaters so as to help us make the decision.
能否告知这些电热器的价格，以便我们作出决定。
Some of the things were hundreds of years old.
展出的一些东西已有数百年的历史了。