1. He observes keenly but says little. ��ע��۲쵫���ٽ�����
2. The poem is only a fragment, but the poet's genius can be keenly felt. ����ʫֻ��һ��Ƭ�Σ�����ʫ�˵�����ǿ�������ظо����ġ�
3. Our directresses encourage and guide, and are keenly aware of your child's development, and introduce new challenges when appropriate. ���ǵĽ�ʦ������ָ���������ܹ�������˽������ӵķ�չ�����ʵ���ʱ��������µ���ս��