短语词组短語unwanted alarm 無用報警unwanted fire 害火unwanted shifting 不必要的變速unwanted mode 不要的振蕩unwanted sideband 乾擾邊帶unwanted child 被遺棄的兒童unwanted voltage 無用電壓unwanted radiation 無用輻射unwanted enantiomers 非目標對映躰 返回 unwanted