The scientists, by sympathetic study and laborious toil, have brought them within our ken.

His anxious and laborious efforts were likely, at last, to be crowned with the happiest success.

他那番急切而辛苦的努力大概终于就要获得最愉快的成功了.

Even with high pressure oxygen pumping into her, breathing was laborious.

尽管输入高压氧,她的呼吸还是非常困难.

Her work is a laborious task.

她的工作很艰苦.

Inventions and innovations almost always come out of laborious trial and error.

发明及创新几乎都是艰苦的试验和失败的产物.

Spent many laborious hours on the project.

这项工程耗费了长期的艰辛劳动.

The laborious process of tallying votes by hand used to provide plenty of room for fraud.

以前那种艰难的人工计票方式为欺诈行为提供了空子.

The prosess was laborious, but I had no reason to complain of the way it worked.

手续是费事的, 但是我没有理由埋怨这样的工作方式.

They were laborious, but he relished this kind of work.

这些计算是很繁重的工作, 但是亚当斯对这种工作甘之如饴.

He traced the words laboriously.

他很费力地写出那几个字.

Tom was but a slow reader, and passed on laboriously from verse to verse.

汤姆念得很慢,他一节一节地往下念去, 感到非常吃力.

He traced his signature laboriously.

他吃力地签上自己的名字.

Slowly, laboriously, she heaved herself over and pulled her heavy skirts up to her thighs.

她缓慢而吃力地抬起身来,将沉重的裙裾拉到大腿以上.

Laboriously the men followed him, strung out along the bank.

队伍在靠岸处拉成长长的一串,吃力地跟着他走.

He was trudging laboriously on the rugged mountain path.

他在崎岖的山路上艰难地行走着.

Laboriously did he describe the genesis of the picnic.

他熬费苦心地描绘了这次野餐的根由.

He sat behind a desk laboriously writing with an Army issue pen.

他坐在书桌后吃力地写着，用的是一支部队发的钢笔。

Millstones had been cut and laboriously sledged down the rough mountainsides.

石磨被琢好,然后费力用雪橇运下那崎岖不平的山坡.

And thus gradually the scheme so laboriously put together unraveled.

这样一来,那项经过苦心筹划出来的方案也就此告吹.

He dressed himself laboriously every morning and afternoon.

他每天早晨和下午花不少工夫梳洗打扮.

Adam invented love at first sight, one of the greatest laborsaving machine the world ever saw.

亚当发明了一见钟情, 那是世界空前的一架最伟大的省力机器.