to read to the students--their own children, really.
共同为学生们, 其实就是他们自己的孩子, 朗读
She is free any time you need help.
你需要帮忙时,请随时向她求助好了。
She always referred to them as 'the shifting population', for they came and went with such frequency that I never even got a chance to learn their names.