futile
例子
Their attempts to repair the old machinery proved futile, as it was beyond repair.
他们试图修理旧机器的努力被证明是徒劳的，因为它已经无法修复了。
Trying to reason with him was futile; he would n't listen to anyone.
试图与他讲道理是徒劳的；他不会听任何人的。
词汇树
futilely
futile
