The toilet and the bathroom were the only spaces where doors were installed.
洗手间和浴室是唯一装有门的空间。
The sender address cannot be an empty string or a string containing only spaces.
发件人地址不能为空字符串或只包括空格的字符串。
The sender address cannot be an empty string or a string containing only spaces.
发件人地址不能为空字符串或只包括空格的字符串。
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