Though drones can be harmful, they can be very helpful.
尽管无人机可能有害，但它们也可能非常有用。
But when stress is encountered continually, the body's reactions are more likely to be harmful than helpful to us.
但当压力不断出现时，身体的反应更有可能是对我们有害而不是有益的。
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。
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。
Fruit juices can be harmful to children's teeth.
果汁可能损坏儿童的牙齿。
Continuous exposure to sound above 80 decibels could be harmful.
持续曝露于超过80分贝的声音可能有害。
The hatred will be harmful to your heart.
仇恨会伤害你的心灵。
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。
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。
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。
Some experts say that music can be harmful if it is too loud.
一些专家说，如果音乐的声音太大，它可能是有害的。
Gas and other fuels that people use for cooking can also be harmful.
人们做饭用的天然气和其他燃料也可能有害。
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。
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。
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。
You want someone not to do something that's going to be harmful or uncomfortable or strange.
你希望某人不要做一些有害的、令人不安的或奇怪的事情。
It will probably be harmful to your stomach and make you feel sick if you make the tea too strong.
如果你把茶沏得太浓，它可能会对你的胃造成伤害，让你感觉不舒服。
Used otherwise it could be harmful.
如不这样使用则可能是有害的。
Having too much money can be harmful.
拥有太多的金钱是有害的。
Situations in which denial can be harmful.
在哪些情况下否认有害。
Too much perming and coloring can be harmful.
过多的烫发和染发会对发质造成损害。
If money is lost, it will be harmful to society.
如果赔钱，则对社会有害。
In addition, ingesting too much zinc could be harmful.
而且锌摄入过多是有害的。
However, too much TV viewing can be harmful to the person.
然而，过度收看电视对人们是有害的。
Television can be harmful if it is watched constantly.
如果我们不停地看电视，这对我们是有害的。
Moreover, even the appearance of ageing can be harmful.
而且，即使出现衰老也会对人不利。
Similarly, varenicline can be harmful even as it is helping.
相似地，varenicline尽管有用但也有害。
Trying not to feel something is ineffective and can be harmful.
试图不去感知是没有效果的并且还是有害的。
Trying not to feel something is ineffective and can be harmful.
试图不去感知是没有效果的并且还是有害的。
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