机器人利用系统中的记录文件来唱歌，还能通过语音识别和面部表情和听众互动。

He sings recorded files in his system and USES speech recognition and facial expressions to interact with his audience.

youdao

第二层防御是尽可能地记录文件的路径（几乎总是可能）。

The second layer is that we record paths for files whenever possible (and it is nearly always possible).

youdao

我增加了打印到标准输出的语句，但是为什么不采用一个更加成熟的日志机制来记录文件上载的时间和地点？

I added statements to print to standard out, but why not use a more sophisticated logging mechanism to keep track of which files have been uploaded and when?

youdao