Pegmatites
(pegmatite 的复数) n.[地质]结晶花岗岩
🗣️ 情景例句
Yes, it was delicious.
对， 味道非常好。
I took off my galsses.
我摘下了我的眼镜。
Oxygen is widely used in ship repairs for cutting and joining metal plates or pipes.
在船舶修理过程中，常常使用氧气切割和焊接金属板或金属管。