é / yǔ / zhōng / de / shé / jiān / chàn / yīn / duì / xǔ / duō / zhōng / wén / mǔ / yǔ / zhě / lái / shuō / hěn / nán / fā / zhǔn / què

俄语中的舌尖颤音对许多中文母语者来说很难发准确。

The alveolar trill in Russian is difficult for many native Chinese speakers to pronounce accurately.