File:國語發音學開口呼.jpg
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![File:國語發音學開口呼.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f7/%E5%9C%8B%E8%AA%9E%E7%99%BC%E9%9F%B3%E5%AD%B8%E9%96%8B%E5%8F%A3%E5%91%BC.jpg/800px-%E5%9C%8B%E8%AA%9E%E7%99%BC%E9%9F%B3%E5%AD%B8%E9%96%8B%E5%8F%A3%E5%91%BC.jpg?20181222081605)
Size of this preview: 800 × 566 pixels. Other resolutions: 320 × 226 pixels | 640 × 453 pixels | 1,024 × 725 pixels | 1,280 × 906 pixels | 2,560 × 1,812 pixels | 4,680 × 3,312 pixels.
Original file (4,680 × 3,312 pixels, file size: 2.36 MB, MIME type: image/jpeg)