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BNC: 8593 COCA: 9891

usefulness

Word family
use·ful·ness /ˈjuːsfəlnəs/ ●○○ noun [uncountableU]  
USEFULthe state of being useful or the degree to which something is useful 有用;实用性
usefulness of
 There are doubts as to the usefulness of this approach (=it may not be useful).
有人怀疑这种方法是否有用。
 As a commuter service, the ferry has outlived its usefulness (=is no longer useful).
作为一种通勤服务,渡船已经没有用武之地了。
Examples from the Corpus
use·ful·ness noun
Chinese
Syllable
Corpus

See also: useful


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