Ledrit
铅黑铜; 铅黄铜
🗣️ 情景例句
You can make a difference.
你会发挥影响力。
How about Mary? How long has she lived there?
玛丽怎么样？她在那儿住多久了？
many of them serious and senior scientists---- who dream of sending people to it.
其中的不少人是认真和资深的科学家，他们一直梦想着把人送上火星。