Giobertite
菱镁矿
🗣️ 情景例句
introduces us to a remarkable new talent.
让我们看到一位卓越的新秀。"
What do you think I should do?
你想我该怎么做呢？
For our purposes, we are concerned only with one kind of cost----
就我们的目的而言，我们只关心一种费用-