The teacher runs them through a drill — the days of the week, the weather and some counting.老师带他们做了反复练习：一周中每一天的叫法、天气和数数。She lived in the Soviet Union, as it then was called.她曾住在苏联，那个时候就是这个叫法。This material is variously termed ash, clinker, cinders or slag.这种材料有多种叫法：灰、煤渣、炉渣或矿渣。