观察look in;observation;overview;sighting;view;viewing详细»
观察follow around;keep observation upon;perspective;survey;take a view;take a view of;take notice;taken notice;taken view of;took a view of;took notice;vet详细»
观察observation;take a view of;takena view of;takes a view of;took a view of详细»
观察observation;observe;sight;spy;surveillance;survey;view;visualize详细»
观察observation;observe;overview;surv*详细»