��ڵ�λ�ã� ��ҳ > Ӣ�� > ý��Ѷ > 60��ѧ > ��

60��ѧ:��ˮ��ӵ�̼��

ʱ��:2011-08-09 11:28:32 ��Դ:scientificamerican �༭:sunny ÿ��Ӣ��ѧ

| �ղ�

��

��ӡ

�ֺ�: �� | �� | С��

PDF�ļ��

̼��Ҳ��Ϊ��Ϳ��򡱣��ǡ��ϩ��ṹ��е�һԱ��ӡ�һ��໯ѧ��ʡ��о��Ա��һ��̼��ָ��ˮ��ӡ��·��ڡ��ѧ��־�ϡ�

��õ��Ӳ��ԳƷ��ö��˵�ز��٣��Ҳ��о��߶��߽��и��о��

ˮ��ճ��һ��Ϊˮ��Ӽ��΢��һ��ˮ��ӵ��һ��ˮ��ӵĸ��Ӽ��ܽ�ϡ��㲻��ͨ��һ��С��Ӱѵ��ˮ��Ӵ��ͬ��з��룬��һ��̼��ˮ��Ӹ��ܻ��ʾ��H2O��ӵı��ܡ�

��ô�йء�̼��أ��о��Ѿ��֡��Ϳ��򡱲��ˮ��ʱ��ɳ̲��Ư��ǵ��̼��к��ˮ��ӵ�ʱ��ʲô��أ��ڡ��Ϳ��з��뼫�Է��ӿ��ܻ�Ӱ��ǵ��ڻ�ѧ��ʣ��ж��ʵ��·��ӡ��˵ʹ��˽�...��ġ�

--Sophie Bushwick

��һҳ [1] [2] ��һҳ �鿴��Ŀ��>>

�ղ�

��ȴ�� 60��ѧ

��һƪ:�߼��:��ڼ��۹��ѧ��

��һƪ:��м��֮ʮ��ӷ��ѵ��(54)

��ܻ��Ȥ��

60��ѧ:Monkey Drives Dinosaur Game Extinct: The U.S. Consumer Product Safety Commission and DND Imports of Los Angeles recently announced a voluntary recall of something called the Dinosaur Era 2 Hunting
ʱ�䣺2009-06-01 �༭��echo

60��ѧ:��Ʋ��: ��ж��ֲ�ͬ��ã��Ʋ��ơ��ϵͳ��ɱ��Tϸ��
ʱ�䣺2011-11-28 �༭��beck

60��ѧ:Ҫ��,ȥ��԰ɢ��: Ӣ��ı��µ��о��ʾ��Ȼ��м�ʹ��ֻ��5��ӵĶ��Ҳ��顣 This podcast is one minute long. If you listen while going for a walk in a
ʱ�䣺2010-05-06 �༭��sunny