就此，15号染色体上成为研究热点的这一区域存在另外两种编码尼古丁受体的基因，提示实际情况将更为复杂。

That, and the fact that the region of chromosome 15 under scrutiny has two other nicotine-receptor genes in it, suggests the situation may indeed be more complex.

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为了说明stdin和stdout，您可在终端窗口中输入以下文本(假设前面的百分号(%)为您的shell提示符)。

To demonstrate stdin and stdout, type the following text in your terminal window (assume that the leading percent sign (%) is your shell prompt).

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升、降、还原号可标在数字旁边，提示这些音程本身应该升或降。

Sharp, flat or natural signs may be placed next to numerals to indicate that these intervals themselves should be sharpened or flattened.

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