Some sounds in English are difficult to pronounce for people in certain countries
質問者様の言いたいことは英語で「Some sounds in English are difficult to pronounce for people in certain countries」と言います。
音は「Sounds」と訳します。
例としては:
- Japanese people find it difficult to differentiate between L and R sounds(日本人はL音とR音を区別するのが難しい)