A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌是一簇美不胜收的花朵，一撮云是无数天体的。

You can see nebulae in the clear summer sky.

晴朗的夏夜可以看到天上的云。

Extragalactic nebula is invisible to the naked eye.

我们用肉眼是看不到河外系的。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当我们的云自身重力作用下崩溃和更加快速地旋转时，云中心形成了密集的物质块。这叫做原恒。

A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌一簇美不胜收花朵，一撮数天体蚁聚。

You can see nebulae in the clear summer sky.

在晴朗夏夜可以看到天上。

Extragalactic nebula is invisible to the naked eye.

我们用肉眼看不到外系。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当我们在自身重力作用下崩溃和更加快速地旋转时，中心形成了密集物质块。这叫做原恒。

A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌是一簇美不胜收的花朵，一撮星云是无的蚁聚。

You can see nebulae in the clear summer sky.

在晴朗的夏夜可以看到上的星云。

Extragalactic nebula is invisible to the naked eye.

我们用肉眼是看不到外星系的。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当我们的星云在自身重力作用下崩溃和更加快速地旋转时，星云中心形成了密集的物质块。这叫做原恒星。

A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌是一簇美不胜收的花朵，一撮星云是无数天体的蚁。

You can see nebulae in the clear summer sky.

朗的夏夜可以看到天上的星云。

Extragalactic nebula is invisible to the naked eye.

我们用肉眼是看不到河外星系的。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当我们的星云自身重力作用下崩溃和更加快速地旋转时，星云中心形成了密集的物质块。这叫做原恒星。

A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌一簇美不胜收花朵，一撮数天体蚁聚。

You can see nebulae in the clear summer sky.

在晴朗夏夜可以看到天上。

Extragalactic nebula is invisible to the naked eye.

我们用肉眼看不到外系。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当我们在自身重力作用下崩溃和更加快速地旋转时，中心形成了密集物质块。这叫做原恒。

A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌是一簇美不胜收的花朵，一撮星是无数天体的蚁聚。

You can see nebulae in the clear summer sky.

在晴朗的夏夜可以看到天上的星。

Extragalactic nebula is invisible to the naked eye.

用肉眼是看不到河外星系的。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当的星在自身重力作用下崩溃和更加快速地旋转时，星中心成了密集的物质块。这叫做原恒星。

A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌是一簇收的花朵，一撮星云是无数天体的蚁聚。

You can see nebulae in the clear summer sky.

在晴朗的夏夜可以看到天上的星云。

Extragalactic nebula is invisible to the naked eye.

我们用肉眼是看到河外星系的。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当我们的星云在自身重力作用下崩溃和更加快速地旋转时，星云中心形成了密集的物质块。这叫做原恒星。

A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌是一簇美不胜收花朵，一撮云是无数天体蚁聚。

You can see nebulae in the clear summer sky.

在晴朗夏夜可以看到天上云。

Extragalactic nebula is invisible to the naked eye.

我们用肉眼是看不到河外。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当我们云在自身重力作用下崩溃和更加快速地旋转时，云中心形成了密集物质块。这叫做原恒。

A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌是一簇美不胜收的花朵，一撮星云是无数天体的蚁聚。

You can see nebulae in the clear summer sky.

在晴朗的夏夜可天上的星云。

Extragalactic nebula is invisible to the naked eye.

我们用肉眼是不河外星系的。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当我们的星云在自身重力作用下崩溃和更加快速地旋转时，星云中心形成了密集的物质块。这叫做原恒星。