当然，如果有以下情况你可以不系安全带 meaning in Chinese
however, you do not have to wear a seat belt if you are reversing your vehicle
or if you have a valid medical certificate which excuses you from wearing it
or you are making a local delivery or collection using a special vehicle
Examples
- However , you do not have to wear a seat belt if you are reversing your vehicle ; or you are making a local delivery or collection using a special vehicle ; or if you have a valid medical certificate which excuses you from wearing it
当然，如果有以下情况你可以不系安全带：你在倒车时，或者你用一种特殊交通工具进行当地的货物运送、收集时，或者你有合法的医学证明你不能系安全带时。