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1·The name stems from the waveform's appearance on a scope; it looks like the teeth of a hand saw.

锯齿波的名字来源于示波器上其波形的形状，它看上去就像是手锯的齿一样。

2·Street can be busy, and there are lanterns, axes, small hand saw and a variety of other stuff.

大街上可热闹了，有灯笼、斧头、小手锯和各种各样的其他玩意儿。

3·Men used to cut trees with hand saw. But now, by using electronic saw they can cut down a tree in only a few minutes.

人类过去用手锯锯树，但是现在，用电锯可在几分钟内锯倒一棵树。

4·I saw them making their way, hand in hand, down the path.

我看到他们手拉手沿着小路朝前走。《柯林斯英汉双解大词典》

5·Then, one day, Joe came home and saw that Delia's hand was burned.

然后，有一天，乔回到家，看到迪莉娅的手被烧伤了。

6·As she got closer, we saw the spear in her hand was just a wooden pole.

当她走近时，我们看到她手里的矛只是一根木杆。

7·Yesterday saw hand-to-hand combat in the city.

昨天那座城里发生了肉搏战。《柯林斯英汉双解大词典》

8·After a while, she saw a man go close to her and put his hand in her pocket with a smile.

过了一会儿，她看见一个男人走到她身边，微笑着把手伸进她的口袋。

9·She saw an old lady, standing by the road, with a sign saying Brockboune in her hand.

她看见一位老妇人站在路边，手里拿着一个写着“布罗克本”的牌子。

10·Fancy his surprise when he saw that it was not a hand, but a cat's paw.

想想看，当他发现那不是一只手，而是一只猫爪时，有多么惊讶。