Unstainable
未锈蚀的, 不腐蚀的, 不锈的
🗣️ 情景例句
When was the last time?
最近一次是什么时候？
Which one is better?
哪一个是较好的？
Education, with its cycles of instruction so carefully worked out,
教育，以其教学周期如此精心地安排，