Kumanal
库曼铜锰铝合金
🗣️ 情景例句
I'm in charge of the sales department.
我主管销售部。
Fall sick and you will see who is your friend and who is not.
困难见友情。
so they insured it for the trip.
于是，他们对这只盘子的运输安全投了保。