此外设备是非常安全和容易的电压校准。
Also the device is very safe and easy to calibrate for voltage.
有许多护绳,使攀岩变得更加安全和容易。
There were plenty of stell ropes which made it safe and fairly easy.
尽管在这将成为可能之前有一些问题需要解决,但我们肯定可以梦想一个世界,在那里科技使千百万人的生活更容易和更安全。
Although there are some problems to solve before this will be possible, we can certainly dream of a world where technology makes life easier and safer for millions of people.
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