lecturer

n.讲演者，讲课者；(大学，学院中的)讲师

leave alone, leave behind, leave in the air, leave off, leave off doing sth., leave open, leave out, leave sth. behind (sb.), leave-taking, leave...alone, leave...behind, leaven, leaves, leavings, lecher, lecherous, lecherously, lechery, lectern, lecture, lectureship, led, ledge, ledger, lee, lee shore, leech, leek, leer, leery, lees, leeward, leeway, left, left bank, left wing, left-hand, left-handed, left-handedness, left-overs,