外形: figure, shape, external form, contour...
背面: the back, the reverse side, the wrong side...
口: mouth, classifier for things with mouths (people, domestic animals, cannons, wells etc), classifier for bites or mouthfuls...
省: frugal, save, to omit, to leave out, to save (money), province, comprehend, introspect, visit...
潮湿: damp, moist...
发觉: to become aware, to detect, to realize, to perceive...
得意扬扬: joyfully satisfied, to be immensely proud of oneself, proudly, an air of complacency...
士气: morale...
讲学: to lecture (on branch of learning)...
炒: to sauté, to stir-fry, to speculate, to hype, to fire (sb)...