Today, although public facilities more modern and convenient to move, we still have many problems that we don't want. First, the public media not reliable. We may be late for work if the bus or the Metro to Ben delay, malfunction or to welcome guests in a long time. Furthermore, we cannot expect them to wait for us though is just a minute. We will move forward if we're late, so we have to wait for the following tour. Therefore, we have to sit in the dock on time and always have to accept late work of means of transport. Some people feel uncomfortable about this. Second, public transport is very cramped and crowded. Having too many people are moved by the same means can cause discomfort and not comfortable. We have to sit with strangers though does not know who they are, which is the cause of the collision. Finally, it is the dirtiest of them. They are not the property of anyone, thus having responsibility for hygiene they can hardly be made a regular. If we move with them everyday, we can suffer some unwanted diseases that do not know what is the cause
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