你确定你正确地发音了 M 和 N 音素吗？ 给我发消息，我会向您发送一段视频，详细解释它们的发音。 准确的发音确保准确的理解。 Are you sure you pronounce the M and N phonemes correctly? Send me a message and I will send you a video explaining exactly how to pronounce them. Accurate pronunciation ensures accurate understanding.