to put too great a load on sth 使超载；使负荷超重◆an overloaded truck 超载的卡车
to give sb/sth too much of sth 给…增加负担◆He's overloaded with responsibilities. 他承担的责任过重。◆My voicemail's overloaded. 我的语音邮件超载。
to put too great a demand on an electrical system, a computer, etc., causing it to fail 使（电路）超负荷；使（计算机）过载◆The lights went out because the system was overloaded. 由於线路过载，电灯灭了。