After a fruitless morning sitting at his desk he had given up.
他在书桌前徒劳地坐了一上午之后便放弃了。
It would be idle to pretend the system is perfect.
假装系统完美无疵是徒劳的。
The criminals vainly sought concealment from the searchlight.
罪犯们徒劳地躲闪着探照灯光。
Parents campaigned in vain for her reinstatement.
父母们呼吁给她复职，但结果却只是徒劳。
It's hopeless trying to convince her.
想说服她简直是徒劳。
He shouted after them, vainly trying to attract their attention.
他在他们的后面高喊，想引起他们的注意，却是徒劳。
It's no use praying for the weather to change.
祈祷天气转变是徒劳的.
They endeavored to make her happy, but in vain.
他们想方设法地使她高兴, 但那是徒劳的.
She judged it a useless attempt to advise him.
她断定,给他提建议是徒劳的.
It's no use your trying it on with me.
你想骗我是徒劳的.
He tried to varnish over the facts, but it was useless.
他想粉饰事实, 但那是徒劳的.
We tried vainly to discover what had happened.
我们设法想要弄清楚发生了什么事,但却徒劳.
It was a vain attempt to shift the responsibility for the murder to somebody else.
试图将谋杀的罪责转嫁给他人是徒劳的。
He spoke calmly to them trying to pour oil on troubled waters but it was useless.
他心平气和地与他们讲话,试图使争吵平息,但这却是徒劳的.
It's no use trying to steer the boy into a course of action that suits you.
想说服这孩子按你的方式行事是徒劳的.