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Rocks

美音、自然拼读、分级阅读与词汇复习

This is a mountain.

这是一座山。

A mountain is made of rock.

山由岩石构成。

This is a boulder.

这是一块巨石。

It broke off the mountain.

它从山体上脱落下来。

This is a stone.

这是一块石头。

It broke off the boulder.

它从巨石上碎落下来。

This is a pebble.

这是一颗卵石。

It broke off the stone.

它从石头上碎落下来。

This is sand.

这是沙子。

It broke off the pebble.

它由卵石碎裂而成。

This is dust.

这是尘土。

Dust is the tiniest piece of rock.

尘土是岩石最细小的颗粒。

Dust is everywhere.

尘土无处不在。