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n. �۲��ߣ��۲��ߣ�������

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n. beholder��commentator��perceiver��percipient

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1. To observe without the observer.
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2. He is an acute observer.
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3. A successful scientist must be a good observer.
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ӢӢ����

n.
  1. a person who becomes aware (of things or events) through the senses
  2. an expert who observes and comments on something

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Observer
�۲���; �۲�Ա; �۲���ģʽ; �۲�ұ�;
Observer Pattern
�۲���ģʽ; �۲���ģʽ��ͼ; ��ͼ]�۲���ģʽ; �۲���ģʽ;
standard observer
��׼�۲���; ��׼�۲�Ա; ���壺��׼�۲���;
North Observer
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observer status
�۲�Ա�ʸ�; �^��T��λ; �۲�Ա��λ; �۲�Ա����;