That's because machine translation techniques rely on analysing the statistical properties of the same text written in two different languages - a Spanish-English dictionary, for example.

这是因为机器翻译技术依赖于分析同一文本两种语言版本的统计特性，如西班牙语——英语字典等。

youdao

The dialogue is in Spanish, with English subtitles.

这段对话是西班牙语的，配有英语字幕。

《柯林斯英汉双解大词典》

Spanish spelling is phonetic, unlike English spelling.

与英语不同，西班牙语的拼写与发音相近。

《牛津词典》

She says her kindergarteners from English-speaking families may have never heard Spanish before.

VOA: special.2010.06.17

We forget about the enormous trading vitality of Asia, even sea vitality and land vitality at the same time, but they are without any question by this point-- with the decline of the Spanish empire, which begins before this course-- the Dutch and the English.

我们先不考虑亚洲大量的贸易活动,包括同时的陆上和海上贸易,在十七世纪之前,随着西班牙帝国的衰退,欧洲最大的贸易实体,毫无疑问是荷兰和英国

耶鲁公开课 - 欧洲文明课程节选

A lot of them are actually English-as-a-Second-Language learners, but for Spanish, so.

他们本身是西班牙人，英语是他们的第二语言。

教英语 - SpeakingMax英语口语达人

In 1999 Slim acquired a majority stake in TracFone, based in Florida, which sells prepaid wireless service to 1.5 million Spanish- and English-speaking customers.

FORBES: Reverses

Some sentences may be entirely in English, apart from one phrase in Spanish - or completely in Spanish, with the English connector "so" in the middle.

BBC: Life in Spanglish for California's young Latinos

Those supporting bilingual education argue that the state's 162, 000 Spanish-speaking pupils achieve more if taught through their first language and that attending an all-English schools would put Spanish-speakers at an immediate disadvantage.

BBC: US vote on bilingual schools