Redledgeite
硅镁铬钛矿
🗣️ 情景例句
Sorry, I have to say good-bye.
我不得不说再见了。
But it looks like that's out of the question.
看现在看来不可能了。
Tell Mary we'll be late for dinner this evening.
你告诉玛丽，今晚吃饭将晚到一会儿。