即时是在疾病早期，放射线学家也很难通过X光发现此种疾病。

Even in its early stages, radiologists can find it difficult to notice the condition on x-rays.

youdao

即时是在疾病早期，放射线学家也很难通过X光发现此种疾病。

Even in its early stages, radiologists can find it difficult to notice the condition on x-rays.

youdao