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ʱ��:2012-02-17 11:31:46 ��Դ:scientificamerican �༭:beck ÿ��Ӣ��ѧ

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1. biodegradable a. �ܽ��ｵ��
��䣺In modern society, we must find some biodegradable alternatives to plastics in order to avoid environmental protection. ��ִ��У��Ǳ��ҵ�һЩ�ɽ��Ĳ��ϣ��Ӷ��⻷��Ⱦ��
2. mimic vt.ġ��
��䣺He mimicked his uncle's voice and gestures perfectly. ��̬ģ�µ�Ω��ΩФ��
3. take note of ע�⣬��
Please take note of our signature, and regard no others as genuine. ��ǵ�ǩ��ǩ��Ч��
4. munch vt.��
��䣺She is munching at an apple. ��׽�ƻ��
5. shelf stability ��
��䣺This technique accomplishes the desired long-term shelf-stability of a product of this type. ����ʵ��Ͳ�Ʒ�ĳ��ڱ��ʡ�

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