由于已经有一处肿瘤了，她现在很可能再长出第二个原发性乳腺癌来。

Now that she has had one tumor, she is at greater risk of developing a second primary breast cancer.

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肿瘤扩散过程中，肿瘤细胞会插足正常的健康机制，使得肿瘤可以分解组织边界并在远隔组织处定居。

During the spread of cancer these normally healthy mechanisms are coopted by cancer cells, allowing the cancer to break through tissue boundaries and colonize distant tissues.

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然后化疗药物就会在目标肿瘤处释放并包围细胞。

A chemotherapy drug is then released to target the tumor and surrounding cells.

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