1. He was also a pioneer in artificial hearts, heart transplants and recording surgeries on film. ��Ҳ��һλ�������࣬������ֲ�ͼ�¼��������ĵ�Ӱ��������
2. To begin, the subjects listened to a recording of a native speaker reading a paragraph in English. ���ȣ��ñ�������һ����Ӣ��Ϊĸ������ʶ���һ��Ӣ�����µ�¼����
3. The top management software of this system provides overall monitoring, recording and management functions for it. ��ϵͳ���ϲ��������Ϊ���ṩ��ȫ��ļ�⡢��¼�������ܡ�
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n.
1. signal encoding something (e.g., picture or sound) that has been recorded
2. the act of making a record (especially an audio record)
3. a storage device on which information (sounds or images) have been recorded