http://www.pons.de/produkte/3-12-517841-X/(牛津大学出版社授权产品)
science [美 ˈsaɪəns, 英 ˈsʌɪəns] 名词
1. science U (in general):
I. hard <harder hardest> [美 hɑrd, 英 hɑːd] 形
2.1. hard (difficult):
2.2. hard (severe):
2.3. hard (tough, cynical):
-  hard person/attitude
-  
