Ferrolite
铁矿岩, 混凝土中铁质掺合料
🗣️ 情景例句
5, 6, 7, go right, 1, 2, back, 5 6 7
向右 1 2 后退
As soon as you have drunk, you turn your back upon the spring.
忘恩负义。
Good morning, class.
同学们，早上好！