| 单词 | to be useful |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔expendable〕Once our services cease to be useful to them, we're expendable.一旦我们的服务对他们不再有用，我们就可能被抛弃。柯林斯高阶〔expendable〕Once our services cease to be useful to them, we're expendable.一旦我们的服务对他们来说没有用了, 我们就无关紧要了。外研社新世纪〔only〕The book is likely to be useful, only it's rather expensive.这本书可能有用,不过相当贵。英汉大词典Like many factories it's a very utilitarian (= designed to be useful rather than decorative) building.这座建筑物像许多工厂一样，是十分实用型的。剑桥国际 |
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