classes: lecturer. If so, then students can ask the lecturer directly. I see the machine rooms are only open when there is practice time, then students have to wait for the lecturer. curriculum. If so, then students can ask the lecturer directly. I see the machine rooms are only open when there is practice time, then students have to wait for the lecturer. facility. If so, then students can ask the lecturer directly. I see the machine rooms are only open when there is practice time, then students have to wait for the lecturer. general. If so, then students can ask the lecturer directly. I see the machine rooms are only open when there is practice time, then students have to wait for the lecturer.