284. The Centers for Disease Control, for example, found that less than one-fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet.

英語四級譯文:
比如說，疾病控制中心發現，只有不到四分之一的想要減肥的超重成年人說他們把運動與節食結合了起來。

四級詞匯講解:
本句的主干是The Centers for Disease Control found that for example為插入語;that引導的是found的賓語從句，其中who were trying to shed pounds是overweight adults的定語從句;they were combining exercise with their diet為said的賓語從句。

shed pounds的意思是“減輕體重”，相當于shed stones。如:
I'd like to shed a few pounds.我想減掉幾磅體重。

combine...with…的意思是“將……與……結合起來，混合”。如:
Remember to combine the eggs with a littxe flour.記得把雞蛋和少量面粉混合在一起。

英語四級考點歸納:
動詞combine可用于以下搭配中:

※ combine to do sth.意為“結合起來做某事”。如:
These factors have combined to harm our friendship.這些因素湊在一起，傷害了我們的友誼。

※ combine sth. with意為“在做某事的同時做……”。如:
You can't combine studying with playing.你不能在學習的同時還想玩。

※ combine sth.意為“混合某物”。如:
Combine all the ingredients in a bowl.把所有配料放到碗里攪拌。