The module must include the head files exporting the objects when the module imports objects.

模块要导入对象时，必须包含导出这些对象的模块的头文件。

youdao

When you're done, the head elements of your HTML files should look like Listing 2.

完成之后，HTML文件的头部元素应该与清单2类似。

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For example, if you want to count only the words in the first five text files in the directory, you can use a pipe (|) to hook the wc and head commands together.

例如，如果您仅希望计算该目录下的前5个文本文件的单词数，那么可以使用竖线(|)将wc和head命令连接起来。

youdao

For example, if you want to count only the words in the first five text files in the directory, you can use a pipe (|) to hook the wc and head commands together.

例如，如果您仅希望计算该目录下的前5个文本文件的单词数，那么可以使用竖线(|)将wc和head命令连接起来。

youdao