1.to date 迄今为止
The best method to date is to seek another way out.
迄今为止,最好的办法就是寻求别的出路。
2.clear sb. of sth. 消除;
They tried to clear him of his suspicion.
他们设法消除他的怀疑。
3.thumb one's nose at 对……嗤之以鼻
Don't thumb your nose at the boss if you want to keep your job!
如果你想保住你的工作,就不要向老板示威!
4.waste little time in doing sth. 旋即;迅速
Peter wasted little time in finding himself another girlfriend.
彼得转头就找了个新女友。
v. 调查,研究
[计算机] 研究











