This is the most direct way but it requires proficient English skills.

上这些学校的官网搜索网络课程是最直接的办法，当然，前提是你必须具备较高的英语水平。

youdao

The children of immigrants tend to be bilingual and proficient in English, "by the third generation, the original language is lost in the majority of immigrant families".

移民的孩子往往会说两种语言，而且精通英语，“到了第三代，大多数移民家庭都丧失了原来的语言。”

youdao

Yet most black South Africans are not proficient in English.

然而，大多数南非人并不精通英语。

youdao

The group, labelled in the report as APT1, was staffed by hundreds of proficient English speakers.

BBC: White House vows to fight trade-secrets theft

APT1, it said, was staffed by hundreds of proficient English speakers.

BBC: China condemns hacking report by US firm Mandiant

It takes students with the lowest skill levels five years to seven years to become proficient in English, research by Cook and Linquanti has shown.

NPR: Instruction Of Students Learning English Bleak