\n
\n
\n
\n
\n
\nCh\u00ednh x\u00e1c th\u00ec b\u00f3ng l\u00f4 \u0111\u1ec1 l\u00e0 m\u1ed9t c\u00e1ch g\u1ecdi th\u01b0\u1eddng nghe c\u1ee7a nh\u1eefng ng\u01b0\u1eddi ch\u01a1i l\u00f4. B\u00f3ng s\u1ed1 \u0111\u1ec1 \u0111\u01b0\u1ee3c chia l\u00e0m 2 lo\u1ea1i: b\u00f3ng \u00e2m d\u01b0\u01a1ng<\/strong> l\u00f4 \u0111\u1ec1. \u0110\u1ec3 t\u00ecm hi\u1ec3u th\u00eam l\u00f4 \u0111\u1ec1 theo b\u00f3ng \u00e2m d\u01b0\u01a1ng l\u00f4 \u0111\u1ec1 ng\u0169 h\u00e0nh l\u00e0 g\u00ec, c\u00e1c b\u1ea1n h\u00e3y tham kh\u1ea3o qua b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y.<\/strong><\/p>\n