helpfulness [美 ˈhɛlpfəlnəs, 英 ˈhɛlpfʊlnəs, ˈhɛlpf(ə)lnəs] 名词 U
1. helpfulness (obligingness):
-  helpfulness
-  
2. helpfulness (usefulness):
-  helpfulness
-  utilidad f
浏览词典
- helmet
- helmsman
- helmswoman
- help
- help along
- helpfulness
- helping
- helpless
- helplessly
- helplessness
- helpline
