blue collar trade union是什么意思，blue collar trade union的翻译，blue collar trade union音标、读音、用法和例句

Warning: file_put_contents(): Only 0 of 6029 bytes written, possibly out of free disk space in /www/wwwroot/ppbbbu/6s-iso.com/index.php on line 55
blue collar trade union是什么意思，blue collar trade union的翻译，blue collar trade union音标、读音、用法和例句_苹果有道词典