I think it's time we tried a fresh approach.

The child disappeared from his home some time after four.

这孩子四点多的时候就离家不见了。

When I left they were all still hard at it.

我离开的时候他们都还在努力工作。

It's time to give serious consideration to this matter.

到了认真考虑这一问题的时候了。

You really have to sell yourself at a job interview.

应聘面试的时候，你真得推销你自己。

What did you miss most when you were in France?

你在法国的时候最怀念的是什么？

There's never a dull moment when John's around.

只要约翰在就不会有沉闷的时候。

His eyes showed open admiration as he looked at her.

他看她的时候，眼神里明显流露着敬佩之情。

It is time to put a stop to the violence.

现在是结束这场暴力活动的时候了。

He always turns up just when you least expect him.

他总是在你最意料不到的时候出现。

Phone them up and find out when they are coming.

给他们打个电话，问问他们什么时候来。

It was time to hand over the reins of power.

是该让权的时候了。

I should, at this point, declare my interest.

到了这个时候，我应该申明我的利益关系。

The stores are packed solid at this time of year.

每年一到这个时候，商店总是挤得水泄不通。

As he walked in, his glasses steamed up.

他进去的时候，眼镜上起了一层雾。

I can't say for certain when we'll arrive.

我说不准我们什么时候能到。

Traffic is now moving more freely following an earlier accident.

早些时候的交通事故过后，现在交通通畅些了。

The government will review the situation later in the year.

政府将在今年晚些时候对形势重新加以研究。

In fact, wavelet transform filter equal to analysis signal by a set of band-pass filters.

小波变换滤波本质上相当于用一组带通滤波器来分析信号.

Morlet-like wavelet cluster based method for band-pass filtering and envelope demodulation is described.

本文提出了一种基于小波簇的带通滤波和包络解调方法.

The realization of band-pass filters using parallel coupled microstrip lines is very popular in microwave systems.

阐述了平行耦合微带线带通滤波器的基本原理.