“到德国留学”用英语可以说成 "study abroad in Germany" 或 "go to Germany for studies."

这个短语的来源是由两个独立的词语组合而成：

"study abroad" 是一个名词短语，意思是在国外学习。这个短语由 "study"（学习）和 "abroad"（国外）两个词组合而成。

例句：

I'm thinking about studying abroad in the summer.
(我在想夏天去国外留学。)

My sister studied abroad in Spain for a semester.
(我的妹妹在西班牙留学了一个学期。)

"in Germany" 是一个介词短语，意思是在德国。这个短语由 "in"（在）和 "Germany"（德国）两个词组合而成。

例句：

I pved in Germany for a year while I was studying abroad.
(我在留学的时候在德国住了一年。)
My husband is from Germany, so we go back to visit his family there every year.
(我的丈夫来自德国，所以我们每年都会去看望他的家人。)

所以，当这两个短语组合在一起时，就可以表示“到德国留学”的意思。

例句：

I'm going to study abroad in Germany next semester.
(我下个学期要到德国留学。)
My friend is considering going to Germany for studies after she graduates.
(我的朋友在考虑毕业后到德国留学。)