Wittite
硫硒铅铋矿
🗣️ 情景例句
The whole house needs re-painting.
整个房间需要重新粉刷。
The whole carton is packed with double straps, each corner of the carton consolidated with metal angles.
纸箱外加了两道箍，每个箱角都用金属角加固。
What are you doing?
你在干什么？