The key to the problem is how to use smartphones.

Some parents agree that smartphones are bad for students' health and study.

一些家长认为智能手机不利于学生的健康和学习。

She knows everything there is to know about smartphones – in fact she's a walking encyclopedia!

她对智能手机的功能无所不知，她就是个活生生的百科全书！

As smartphones have multiplied, so have questions about their impact on how we live and how we work.

随着智能手机大量增加，关于它们如何影响我们生活和工作的问题也在大量增加。

For years, smartphones, televisions, tablets, laptops and desktops have made up a huge part of the market and driven innovation.

年来，智能手机、电视、平板电脑、笔记本、台式机占据了市场的大部分份额并引领着创新。

But consumers' preferences were already shifting toward touch-screen smartphones.

但消费者的偏好已经转向触摸屏智能手机。

In the last 50 years, there have been great achievements in communication, such as radio, TV, computers, the Internet, and smartphones.

在过去的50年里,在通讯领域取得了巨大的成就,如收音机、电视、电脑、互联网和智能手机。

We've all been there ： in a lift, in line at the bank or on an airplane, surrounded by people who are, like us, deeply focused on their smartphones or, worse, struggling with the uncomfortable silence ．

我们都遇到过这种情况：在电梯里,在银行排队,或是在飞机上,周围都是像我们一样专注于智能手机的人,还有更糟糕的，就是在不安的寂静中挣扎的人。

It was a huge milestone in the development of smartphones, which are now owned by a majority of American adults and are increasingly common across the globe.

这是智能手机发展的一个重大里程碑，如今大多数美国成年人都拥有智能手机，而且它们在全球也变得越来越常见。

She said, Smartphones are useful, I often use my phone to surf the Internet, chat with my friends and get the latest news.

她说，智能手机很有用，她经常用手机上网和朋友聊天获取最新消息。

They hope their children can keep away from smartphones.

他们希望他们的孩子能远离智能手机。

83% of workers say they're stressed about their jobs, nearly 50% say work-related stress is interfering with their sleep, and 60% use their smartphones to check in with work outside of normal working hours.

83%的人表示工作压力大，近50%的人表示工作压力已经影响了他们的睡眠，60%的人在非工作时间用智能手机工作。

Smartphones have advantages and disadvantages.

智能手机有优点也有缺点。

Forty years ago, no one could imagine a world with tiny computers and amazing smartphones.

四十年前,没有人能想象一个拥有微型电脑和神奇智能手机的世界。

In fact, the microphones in smartphones are very sensitive ．

事实上,智能手机中的麦克风非常灵敏。

As students, we don't need to use smartphones.

作为学生,我们不需要使用智能手机。

Researchers have already begun to use smartphones in social scientific research, either to query people regularly as they engage in their normal lives or to record activity using the device's built-in sensors.

研究人员已经开始在社会科学研究中使用智能手机，要么用于定期询问正常生活期间的人们，要么使用智能手机的内置传感器记录活动。

Are smartphones disturbing children's sleep?

智能手机是否在扰乱儿童的睡眠?

Smartphones offer new tools for achieving these ambitions, providing rich data about everyday behaviors in a variety of contexts.

智能手机提供了实现这些目标的新工具，并提供了有关各种环境中日常行为的丰富数据。

One international study found that 84% of people say they couldn't go a day without their smartphones.

一项国际研究表明，84%的人认为他们一天都离不开手机。

B high strength and also high strength to weight ratio, good c orrosion resistance.

高强度和高强度重量比，好的