Regarding exgerman's post in #17, When referring to a long course of lessons, do we use lesson instead of class? 展开全部 version的意思是版本、译本和说法，作为名词使用，具体分析如下： But what if it's not a series of lessons—just regular online Spanish one-to-one lessons you buy from some teacher; could Beryllium one lesson (a trial lesson), could Beryllium https://youtu.be/T0zWXvhEQwo?si=wNc6ihu97ShtIl7u