I heard David yelling and telling them to get back.是什么意思？

I heard David yelling and telling them to get back.

我听到戴维高声喊叫着要他们回来。

heard

v. 听到，听见( hear的过去式和过去分词 )，听说，得知，听取；

例句
He acted as if he hadn't heard any of it...
他表现得好像对此毫不知情。

David

n. 大卫；

例句
...the prominent naturalist and broadcaster, Sir David Attenborough.
著名的博物学家兼主持人戴维·阿滕伯勒爵士

yelling

v. 叫喊，号叫，叫着说( yell的现在分词 )；

例句
Woman ( Geum Ja ? ): ( yelling ) Why don't you believe what I'm saying?
女 ( 叫喊著 ): 金子? 为何你不相信我说的?

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

telling

adj. 有效的，显著的，生动的，说明问题的；v. 讲述( tell的现在分词)，告诉；

例句
Pete was telling them an anecdote about their mother...
皮特正在给他们讲一件他们母亲的趣闻。

them

pron. 他们，她们，它们；

例句
I take care of them to the best of my abilities...
我尽我所能地照顾他们。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

get

vt. 得到，抓住，说服，受到（惩罚等）；vt.& vi. 到达，来；vi. 成为，开始，设法对付，获得利益或财

例句
The regulations were relaxed and the prisoners could get out and about a bit.
规定有所放宽，犯人可以出去短暂放风。

back

n. 背，背部，背面，反面，后面，后部，（椅子等的）靠

例句
He looked back at the abject, silent girl and repeated his question.
他转过头看着这个噤若寒蝉的女孩，又重复了一遍他的问题。