在《PONS词典》中的词汇
I. ˈback·up [ˈbækʌp] 名词
II. ˈback·up [ˈbækʌp] 名词 modifier
1. backup (emergency):
2. backup 金融:
3. backup (in marketing):
4. backup 计算机:
sys·tem [ˈsɪstəm] 名词
1. system (network):
3. system (method of organization):
4. system 天文:
5. system (way of measuring):
7. system 医学:
8. system 贬:
无例句可用
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