<\/span><\/h3>\nC\u1ea7n ch\u00fa \u00fd quan s\u00e1t b\u1ea3ng t\u1ef7 l\u1ec7 th\u00f4ng th\u01b0\u1eddng khi xu\u1ea5t hi\u1ec7n m\u00e0u \u0111\u1ecf l\u00e0 t\u1ef7 l\u1ec7 c\u01b0\u1ee3c \u0111ang c\u00f3 d\u1ea5u hi\u1ec7u t\u0103ng, c\u00f2n m\u00e0u xanh l\u00e0 bi\u1ec3u th\u1ecb t\u1ef7 l\u1ec7 \u0111ang gi\u1ea3m.<\/p>\n
Quan s\u00e1t bi\u1ebfn \u0111\u1ed9ng c\u1ee7a t\u1ef7 l\u1ec7 k\u00e8o c\u01b0\u1ee3c m\u00e0 nh\u00e0 c\u00e1i \u0111\u01b0a ra c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n ch\u1ecdn \u0111\u01b0\u1ee3c th\u1eddi \u0111i\u1ec3m th\u00edch h\u1ee3p \u0111\u1ec3 \u0111\u1eb7t c\u01b0\u1ee3c.<\/p>\n