classes:  lecturer. You say a lot of hard words, but you say them so quietly and so quickly, I can't hear what they are.  curriculum. You say a lot of hard words, but you say them so quietly and so quickly, I can't hear what they are.  facility. You say a lot of hard words, but you say them so quietly and so quickly, I can't hear what they are.  general. You say a lot of hard words, but you say them so quietly and so quickly, I can't hear what they are.