必备

读音：bì bèi

繁体字：必備

英语：indispensable >查看必备英文例句

造句：

组成结构

• 备 解释： 备 (形声。从人,備(衢??))声。本义谨慎、警�...》查看详细
• 必 解释： 必 (会意。从八,从弋。弋亦兼表字音。八”...》查看详细

以必开头的词语：
Fatal error: Uncaught exception 'Predis\Connection\ConnectionException' with message 'Connection refused [tcp://127.0.0.1:6379]' in /www/wwwroot/www.gzlnyxy.cn/vendor/predis/predis/src/Connection/AbstractConnection.php:155 Stack trace: #0 /www/wwwroot/www.gzlnyxy.cn/vendor/predis/predis/src/Connection/StreamConnection.php(128): Predis\Connection\AbstractConnection->onConnectionError('Connection refu...', 111) #1 /www/wwwroot/www.gzlnyxy.cn/vendor/predis/predis/src/Connection/StreamConnection.php(178): Predis\Connection\StreamConnection->createStreamSocket(Object(Predis\Connection\Parameters), 'tcp://127.0.0.1...', 4) #2 /www/wwwroot/www.gzlnyxy.cn/vendor/predis/predis/src/Connection/StreamConnection.php(100): Predis\Connection\StreamConnection->tcpStreamInitializer(Object(Predis\Connection\Parameters)) #3 /www/wwwroot/www.gzlnyxy.cn/vendor/predis/predis/src/Connection/AbstractConnection.php(81): Predis\Connection\StreamConnection->createResource() #4 /www/wwwroot/www.gzlnyxy.cn/vendor/predis/predis/src/Connection/StreamCo in /www/wwwroot/www.gzlnyxy.cn/vendor/predis/predis/src/Connection/AbstractConnection.php on line 155