Intrastructure
内壳构造
🗣️ 情景例句
She is giving me piano lessons in exchange for her English classes.
我教她英语，她教我弹钢琴。
Do you ever work at the factory on Sunday?
你曾经在星期日在工厂工作吗？
I would suggest that you use this material instead of that.
我建议你改用这种替代那种。