Only less than one-third of students are unable to concentrate on their studies as they're addicted to playing computer games.这个句子中的错误

这个句子没有明显的语法错误，但是可以进行一些改进。例如： - "Only less than one-third"可以改为"Fewer than one-third"，这样更符合习惯用法。 - "as they're addicted to playing computer games"可以改为"due to their addiction to playing computer games"或"because they are addicted to playing computer games"，这样更准确地传达了原因与结果的关系。