Shrimp and crab refer to all kinds of aquatic animals and small people.

Pinyin is the foundation of primary school literacy and writing, which needs to be mastered well. Pinyin is divided into initials and finals, which need to be memorized.

The initials are B, P, M, F, D, T, N, L, G, K, H, J, Q, X, zh, ch, sh, R, Z, C, S.

The vowels are a, o, e, I, u, v, ai, ei, ui, ao, ou, iu, ie, ve, er, an, en, in, un, vn, ang, eng, ing, ong.

Shrimp and crab are another family of arthropods, all of which belong to the Decapoda of Crustacea. These animals are closely related to human beings, and some of them are the main aquaculture or fishing objects, especially shrimp, lobster and crab.

The output of shrimps and crabs is quite large in China's marine fishery catch, especially prawns, shrimps and swimming crabs. Rich nutrition, high output value and more important position. There are many kinds of shrimps and crabs in China. Through a lot of investigation and study, about 1000 species have been found, including more than 400 species of shrimp and more than 600 species of crab.

Shrimp and crab are another family of arthropods, all of which belong to the Decapoda of Crustacea. These animals are closely related to human beings, and some of them are the main aquaculture or fishing objects, especially shrimp, lobster and crab.