usefulness 详细解释
usefulness
['ju:sfulnis]
n.有用, 有用性
n.
有用, 有益, 有效[U]
He has outlived his usefulness.
他已老而无用了。
词形变化
副词: usefully | 名词: usefulness |
词义辨析
同义参见:
英英释义
名词 usefulness:
the quality of being of practical use
同义词：utility
补充
usefulnessusefulness[ˈju:sfulnis]n.1.有用,有效性例句
1. He questioned the usefulness of such a device.他对这种设备是否有用持怀疑态度。热门单词推荐
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