| 单词 | futile |
| 例句 | futile adjective •they piled on thousands of sandbags in a futile attempt to hold back the river:fruitless, vain, pointless, useless, ineffectual, ineffective, inefficacious, to no effect, of no use, in vain, to no avail, unavailing | unsuccessful, failed, thwarted | unproductive, barren, unprofitable, abortive | impotent, hollow, empty, forlorn, idle, hopeless | archaic bootless. ANT useful. |
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