这是非常重要的，因为早期肺癌通常无症状，很难诊断，而这时期的治疗往往非常有效。

This is significant because lung cancer is often silent in its early stages and difficult to diagnose which is the stage when it could be treated effectively.

youdao

这些都可能是肺癌早期的典型症状。

These are likely to be typical of the early symptoms of lung cancer.

youdao

这些都可能是肺癌早期的典型症状。

These are likely to be typical of the early symptoms of lung cancer.

youdao