回答如下:
因为在英语中,星球和 湖泊的名词前要用定冠词the。
在下列情况下,英语名词前面要用定冠词the :
1、 特指人或物:
The book on the desk is mine. 
The man you see is my uncle. 
2. 和单数名词、形容词或者分词连用,表示一类人或事物:
the tiger老虎,  the old老年人, the living活着的人
3、 指世界上独一无二的事物:
The sun rises in the east. 
4、 用在序数词、形容词最高级前:
She was the first person to know that news.
He is the strongest boy in our class.
5、 在发明物的名词前:
The washing-machine was invented by that old scientist.
6、 在方位名词前:
There is a beautiful park in the east of our city. 
7、 在江河、海洋、湖泊、群岛、山脉的名称前:
the Great Wall长城,the Changjiang River长江,the West Lake 西湖。
8、 在乐器名词前:
play the violin演奏小提琴 ,play the guitar弹吉他。
starlake前面为什么不加the
因为表示湖泊,岛屿,山峰的专有名词不能用定冠词。star lake中文意思是星湖,星星海
Star Lake Bio-Chemical Pharmaceutical Factory was founded and went into operation, with main products inosine, L-Proline, Now it becomes the largest inosine manufacture on globe.