Pegmatite
n. [地质]结晶花岗岩
🗣️ 情景例句
Yes, I use it fairly often.
有，我常用。
What will you do about it?
你会拿这事怎么办？
I immediately embarked on an experiment which, even though if failed to get rid of the ants, kept me fascinated for twenty-four hours.
我当即动手作了一项试验，这项试验尽管没有使我摆脱这些蚂蚁，却使我着迷了24小时。