Siegenite
块硫镍钴矿
🗣️ 情景例句
Please wait a second.
请稍等。
Did you go to the picnic this morning?
你今早去野餐了吗？
That's OK. Jim, you must look after yourself and keep healthy.
行。吉姆，你要照顾好自己，保持身体健康。