Using your big toe as a pointer, tracing the alphabet as if you were writing in the sand.

把你的大脚趾当做一个指针书写英文字母，就像在沙地上写字母一样。

youdao

Open for reading and writing; place the file pointer at the beginning of the file and truncate the file to zero length.

打开阅读和写作，放置在文件的开头文件指针并截断该文件的长度为零。

youdao

Open for writing only; place the file pointer at the beginning of the file and truncate the file to zero length.

打开只写；放置在该文件的开头文件指针并截断该文件的长度为零。

youdao