He is using the English translation of the German word frohlich from Nietzsche's The Gay Science.

他用的其实是德语“快乐的“一词的英文翻译,而那个词则来自尼采写的“快乐的科学家“这个标题。

耶鲁公开课 - 文学理论导论课程节选

So my accent is confused because I also spoke Swiss, German and Italian.

所以我的口音很混杂，因为我还会说瑞士语、德语和意大利语。

世界就是我的故乡 - SpeakingMax英语口语达人

In Alsace almost everybody, as you will see later, spoke German dialect. But it didn't mean, if you asked somebody, "Are you French?"

在阿尔萨斯基本上每个人,你以后就知道,说一种德语方言,但也不是说,你要问别人,"你是法国人吗"

耶鲁公开课 - 1871年后的法国课程节选

And, being he described as an infinity of indivisible particles, which he dubbed atoms from the Greek.

他将原子描述为无限的极微小的,粒子，他用德语给原子命名。

麻省理工公开课 - 固态化学导论课程节选

People speaking Flemish in the north and French in the south.

北方人说弗兰德语，南方人说法语。

比利时和美国的差异 - SpeakingMax英语口语达人

and they reply in German, "Yes, I'm French," that doesn't--language doesn't necessarily tell you how people feel about their identity. Some sage once said, I don't know who it was, but I love this expression, that a language is a dialect with a powerful army.

然后他们用德语回答,"我是法国人",不一定--语言不一定能代表,对自己的身份认同,有个哲人说过,我忘了是谁,但我特喜欢这句,说语言就是有强大军队撑腰的方言

耶鲁公开课 - 1871年后的法国课程节选