In Sierra Leone, English is used as the medium of instruction for all primary education.

在塞拉利昂，所有基础教育都用英语授课。

《柯林斯英汉双解大词典》

English is not the usual medium of instruction in our school.

英语不是我校通常使用的教学语言。

youdao

Leone, English is used as the medium of instruction for all primary education.

在塞拉利昂，基础教育阶段全部用英语授课。

youdao

The medium of instruction being in Czech for most courses (certain courses are conducted in English), the beneficiaries of these fellowships are required to pursue a one-year preparatory Czech language course.

UNESCO: MEDIA SERVICES

The pair also opened a school that used the Kaurna language as a medium of instruction for almost six years before it was closed down by the authorities, who would only tolerate English.

BBC: Lost indigenous language revived in Australia