Petrographers
(petrographer 的复数) 岩相学家
🗣️ 情景例句
This is no small accomplishment.
这是非同小可的成就。
That's fine. Fill out this form and let me see your credit card, please.
好极了，请填一下这张表，再给我看一看你的信用卡。
This combines a typewriter keyboard, a printer and a computer.
这种机器把打字机键盘、打印机和电脑连接起来。