Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/00171e7204597d95f560ff434bab51bb.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 trinomial expansion是什么意思，trinomial expansion的翻译，trinomial expansion音标、读音、用法和例句_绍翊字体网有道词典