“徒劳”怎么读？

他在书桌前徒劳地坐了一上午之后便放弃了。After a fruitless morning sitting at his desk he had given up.假装系统完美无疵是徒劳的。It would be idle to pretend the system is perfect.罪犯们徒劳地躲闪着探照灯光。The criminals vainly sought concealment from the searchlight....

“徒劳”的英语可以翻译为：futile effort，fruitless labour，hold a candle to the sun，lost labour ...

“徒劳”的近义词/同义词：白费, 枉费。...