L\u00f4 xi\u00ean quay c\u00f3 l\u1ebd l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c \u0111\u00e1nh l\u00f4 quen thu\u1ed9c v\u00e0 d\u1ec5 d\u00e0ng nh\u1ea5t. Tuy nhi\u00ean \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi m\u1edbi ti\u1ebfp x\u00fac v\u1edbi l\u0129nh v\u1ef1c l\u00f4 \u0111\u1ec1 th\u00ec vi\u1ec7c t\u00ednh to\u00e1n ch\u1eafc ch\u1eafn s\u1ebd g\u1eb7p r\u1ea5t nhi\u1ec1u kh\u00f3 kh\u0103n. Ch\u00fang t\u00f4i s\u1ebd c\u00f9ng c\u00e1c b\u1ea1n \u0111i t\u00ecm hi\u1ec3u v\u00e0 kh\u00e1m ph\u00e1 c\u00e1ch t\u00ednh l\u00f4 xi\u00ean quay nhanh nh\u1ea5t v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t.<\/p>\n
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