heavily polluted★★★★

严重污染

[例] For less heavily polluted water, similar equipment is used, except that the glass tubes are

coated with titanium dioxide.

对于那些污染不是很严重的水，也使用类似的设备，只是，玻璃管上涂有二氧化钛。

heavy metals

重金属

[例] Of all the heavy metals it is the only non-toxic.然而在所有的重金属元素中，只有它是无毒的。

household rubbish★★★

生活垃圾

[例] Old electrical items are being thrown out with household rubbish because many people don't

know how to recycle them, a new survey reveals today.今天一项新的调查报告显示， 许多人由于不知

道如何回收旧电器，便将它们与家庭垃圾一同丢弃。

household waste★★★

生活垃圾

[例] As more people move into cities, the problem of household waste is becoming severe.随着更

多的人进入城镇，家庭垃圾的问题正变得严重。

human caused disturbance

人为干扰

human activities

人类活动

[例] That said, one thing is clear: this is an era when everything is dominated by human ativities.这

就是说，有件事是非常清楚的:这是一个所有事物都由人类活动主导的时代。

hybrid cars

混合动力汽车

[例] Rare earths are also essential to a host of green machines, including hybrid cars and wind

turbines, 稀土基本上也是绿色机器的主角，包括混合动力汽车和风力涡轮机。

illegal hunting★★★

非法狩猎

[例] That is not for lack of llegal hunting in the park.这种情况的出现并不是因为在这个国家公园里缺

少这些非法捕猎。

impose curbs on smoking★★★

限制吸烟

[例] We should impose curbs on smoking.我们应该限制吸烟。

improve air quality★★★

提升空气质量

[例] A lack of wind or rain over the past week hasn't helped improve air quality.上周缺少风雨的天气

并没有对空气质量提高起到帮助作用。