These different mouth shapes can help us to practice our pronunciation. 这些不同的嘴型能够帮助我们练习发音。
N-COUNT. 柔术表演者;柔软杂技演员. A contortionist is someone who twists their body into strange and unnatural shapes and positions in order to entertain other people, for example in a circus. N-COUNT. 形状;外形;轮廓;样子. The shape of an object, a person, or an area is the appearance of their outside edges or surfaces, for example whether they are round, square, curved, or fat.