A fool's errand
徒劳的任务
🧩 词语组成解析
🗣️ 情景例句
By the way,
顺便问一声，
Jean was outspoken about her wish to be married.
琼毫不隐讳她意欲结婚的愿望。
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。