Sefstromite
钒钛铁矿
🗣️ 情景例句
you need to work at it, Grandpa.
你得常练它， 爷爷。
Silence gives consent.
沈默等于同意。
It was beginning to get dark. I think we'd best stay the night here, I said.
天开始变黑。“我看我们最好在这里过夜，”我说，