Subcrystal
亚晶体
🗣️ 情景例句
I see him on the train every day but we are not on speaking terms.
我每天都在火车上见到他，但彼此没有说过话。
I enclosed some photographs in my letter.
我在信封里装了一些相片。
It's my pleasure.
我请得心里高兴。