Yak is a unique cattle breed in alpine region, and it is a herbivorous ruminant. Yak is a mammal living at the highest altitude in the world. It is mainly produced in the Qinghai-Tibet Plateau in China, which is over 3000m above sea level. Adapting to the alpine ecological conditions, it is rough and hard-working, good at taking steep slopes and dangerous roads, snow-capped mountains and swamps, and can swim across rivers and rapids. It is known as the "boat on the plateau". Yak is full of treasures. Tibetan people can't live without it. People drink yak milk, eat yak meat and burn yak dung. Its wool can be used as clothes or tents, and its skin is a good material for tanning. It can be used not only for farming, but also as a means of transportation on the plateau. Yaks also have the ability to know the way. They are good at taking dangerous roads and swamps, and can avoid traps and choose their way, which can be used as a guide for tourists.

Wild yak is a large cloven-hoofed animal. Strong body, with prominent shoulders. Small ears; Both males and females have horns, the horns are black, the males have big horns, and the ends of the horns are far away. Short and strong limbs. The coat above the body is short and smooth, and the hair on the side, abdomen and tail is long and drooping, often close to the ground. The body length is about 250 cm and the shoulder height is about 170 cm. The whole body color is mainly dark black and brown.

Yak's head is big, its horns are thick, its skin is loose and thick, its bun is long and wide, its forelimbs are short and straight, its hind limbs are knife-shaped, its lower side is reversed with thick hair, its tail is short and fluffy, its male yak's head is heavy and rectangular, its neck is short, thick and deep, and its testicles are large, close to the abdomen and not drooping. Female yak has long head, big round eyes, wide forehead, horns, long and thin neck, small breasts, bowl-shaped nipples and inconspicuous mammary veins.

The head is heavy, the forehead is wide and flat, the face is slightly concave, the eyes are round, the mouth is large, the lips are thin, and most of them have horns. The horns are folded outward and open, and the angular spacing is large. The horns of the female yak are very thin. Male and female have no dewlap. The chest is open, the chest is deep, the ribs are open, the back and waist are straight, the abdomen is large but not drooping, and the tarsal part is narrow and inclined. The tail root is low and the tail is short. Strong limbs, small and round hooves, tight hooves and solid hooves. Hair grows on the front chest, arms, chest, abdomen and body side to the ground, and the tail hair is broom-like.

The vowel letter A is pronounced in a stressed closed syllable with a short vowel/? /,when pronounced, the end of the tongue is close to the lower teeth, the front of the tongue is raised, and the tongue position is low, which is the lowest among the four front vowels, but the one with the largest opening belongs to a short vowel. However, in actual pronunciation, it has a considerable length, and the gums are between half-open and open, and the lips are not round. This sound appears in the prefix and the position in the word, such as:

Mat cushion

Map map

Bag bag

Cat cat

Hat wide-brimmed hat

Fan fan

Bat racket

Apple apple

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