提示词：智能手机 smartphone, 二维码 the QR code
I’m writing to tell you more about the new form ofsharing bike mobike mentioned in your latest letter.
It’s veryconvenientto use if you have a smartphone. What you do is find a nearest mobikethroughthe APP, scan the QR code on the bike, and enjoy your trip.
Compared toother forms of sharing bike, the greatest advantage of mobike is that you can easily find one and never worry about where to park it. It is becoming a new trendas a means of transportation, which relieves the traffic pressureand does good to the environment as well.
Hope to ride a mobike with you in China.
最近很多大城市都投放了共享单车(shared bikes)，比如摩拜单车(Mobike)、Ofo共享单车等。由于它们方便停放，骑车也能起到锻炼身体的作用，作为代步工具很受大家欢迎。但是，各地也出现了很多毁车现象，比如刮掉车上的二维码(QR code)、上私锁等。
参考词汇：bike-sharing companies 共享单车公司，Mobike 和Ofo 是两家共享单车公司，convenience 方便，register登记
The shared bikes like Mobike and Ofobring great convenience to people. You needn’t lock them by simply using your smart phone. They can take you where the subway and bus don’t go. And they can be left anywhere in public for the next user.
However, bad things happen. Some people damage the QR code on the bike, or use their own lock, whichcauses trouble toother users.
In my opinion, it’s difficult to turn these people’s ideas in a short time. Therefore, bike-sharing companies like Mobike and Ofo need to do something. For example, those who damage the bike should pay for their actions. Also, because people use their real name toregisteras a user, it’s a good way to connect to one’spersonal credit.
In the end, what I want to say is to take good care of public services.