obligatory vessel是什么意思，obligatory vessel的翻译，obligatory vessel音标、读音、用法和例句

Warning: file_put_contents(): Only 0 of 4857 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55
obligatory vessel是什么意思，obligatory vessel的翻译，obligatory vessel音标、读音、用法和例句_绍翊字体网有道词典

obligatory vessel

基本解释

专业释义

交通运输工程