一干二净的英文：
thoroughly
completely

参考例句：

All the restless devils inside her were quietened by this silence and by the calm strength of this companion
这同伴的沉着镇静，把她心中的烦躁不安驱散得一干二净。

When you are eating Korean barbecue, there is no such thing as friend.
当你在吃韩国烤肉时，早就把朋友忘得一干二净了。

altogether ";"lock, stock and barrel;root and branch
一干二净

He promptly forgot all about it.
他马上把这事儿忘得一干二净。

He stared at her evenly, all cordiality gone.
他冷冷地望着她，刚才热诚的样子消失得一干二净。

He stared at her evenly, all cordiality gone
他冷冷地望着她，刚才热诚的样子消失得一干二净。

She lapped slower, then licking the saucer clean
猫儿放慢了舔的速度，然后把碟子舔个一干二净。

My whole living was in this suit, and has been thus shamefully sucked away
我的全部生活费都被扯进去，被诈得一干二净。

He sought in his head for an incantation that had faded clean away.
他拼命搜索他的脑袋，老想找出那道早被忘得一干二净的护身符咒。

They've never had anything spare — they've always used it all.
他们从没有任何备用的东西——他们总是把什么都耗费得一干二净。

thoroughly是什么意思：
adv. 完全地；非常，极其；彻底地；认真仔细地

This lesson is thoroughly motivated.
这节课非常生动有趣。

Her life is thoroughly routinzed.
她的生活完全地例行公事化。

The chassis was thoroughly revised.
该底盘经过了彻底的改造。

The fire illuminated the street thoroughly.
大火照亮了整个街区。

Each new volume is thoroughly referenced.
每本新书都有详细的附注。

completely是什么意思：
adv. 完全地，彻底地，完整地

Complete power corrupts completely.
绝对的权力造成绝对的腐败。

completive interjection
补足叹词

The task is complete.
任务完成了。

It is completely unverifiable.
这个完全无法核实。

It is the first complete revision of the dictionary since it was completed in 1928.
也是该词典于1928年编纂完毕后的第一次完整的修订。