慢速英语:Study: Use of Antibiotics in Farm Animals Expected to Grow

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短语讲解：

1. A new study has found the amount of antibiotics given to farm animals is expected to increase by two-thirds over the next 15 years.

be expected to 被期待做某事; 有望做某事; 期许
例句：I shall be expected to shell out the money for the party. 
我将要支付这个集会的费用。 

2. “As the animals are crowded together, oftentimes the easiest way to deal with some of the problems of crowding is to give them antibiotics.”

deal with 与…交易; 应付;  对待
例句：I hate to deal with such a vegetable. 
我不愿意同这种无精打采的人打交道。

3. Doctors find that antibiotics that once worked against the infections no longer do.

no longer 不再
例句：The mine is no longer being worked. 
这座煤矿现在已不开采了。 

4. At least 23,000 die from an infection.

at least 至少
例句：For that day at least he lost heart. 
至少这一天他是垂头丧气的。