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1·The booklet should be very helpful to parents of disabled children.

这本小册子对于残疾儿童的父母会很有用。《牛津词典》

2·Who is helpful to her?

谁可以帮助她呢？

3·This will be helpful to start your friendship.

这将有助于开始你们的友谊。

4·Helping him fight is not really helpful to him.

帮助他打架对他并没有什么帮助。

5·In my opinion, it's helpful to share school life with her.

在我看来，与她分享学校生活是有帮助的。

6·Robots can be very helpful to avoid mistakes or accidents.

机器人可以非常有助于避免错误或事故。

7·Sometimes, emojis can be helpful to people from different countries in understanding each other.

有时候，表情符号可以帮助来自不同国家的人们相互理解。

8·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。

9·It is helpful to use well-known ideas such as an ambulance siren or a gunshot because these sounds carry a lot of context with them.

使用诸如救护车汽笛或枪身之类众所周知的音效是有帮助的，因为这些声音本身蕴含了环境信息。

10·Video games and TV might keep children engaged for hours on end, but they are not helpful to children's overall cognitive development.

电子游戏和电视可能会让孩子们连续玩上几个小时，但它们对孩子的整体认知发展没有帮助。