If a cell is empty, it is treated as having an empty string.

如果单元格为空，它以空字符串处理。

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Because of this, small cell lung cancer is treated with chemotherapy.

正因为如此，要通过化疗治疗小细胞癌症。

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Because of this, small cell lung cancer is treated with chemotherapy.

正因为如此，要通过化疗治疗小细胞癌症。

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