| 例句 |
Someone cranked up the volume of the public-address system.有人调高了公共广播系统的音量。Someone cranked up the volume of the public address system.有人调大了公共广播系统的音量。These broadcasting systems are cold-war relics.这些广播系统是冷战的残留物。The BBC has demonstrated its digital radio system.英国广播公司演示了其数字广播系统。 |