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1·The results of a growing number of studies suggest that even a modest vitamin shortfall can be harmful to your health.

越来越多的研究结果表明，即使是轻微的维生素缺乏也会对健康有害。

2·Attracting numbers of birds continually to the same spot can be harmful to them, particularly species that pick food from the ground contaminated by the droppings of other birds.

持续吸引大量的鸟类到同一地点对它们来说是有害的，尤其是那些在被其他鸟类粪便污染的土地上觅食的鸟类。

3·Fruit juices can be harmful to children's teeth.

果汁可能损坏儿童的牙齿。《牛津词典》

4·The hatred will be harmful to your heart.

仇恨会伤害你的心灵。

5·Too much screen time may be harmful to your health.

对着屏幕时间过长可能对你的健康有害。

6·Drinking too much juice can be harmful to people's teeth.

喝太多的果汁会对人们的牙齿造成伤害。

7·If we throw them away, they will be harmful to our environment.

如果我们把它们扔掉，它们将对环境有害。

8·What's more, delivery services are creating too much packaging waste, and this will be harmful to the environment.

而且，送货服务产生太多的包装垃圾，这会对环境有害。

9·Hours of watching the mobile phones can be harmful to their eyes and cause students to sleep less.

长时间看手机对眼睛有害，也会导致学生睡眠不足。

10·These behavioral changes may in turn be harmful to the health.

这些行为的改变反过来可能对健康产生危害。